Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > 5th Gen Honda Prelude

Thread Title
flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 12-10-2014, 02:41 AM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

car: 98 prelude, h23a vtec Bluetop. Syptoms: CEL stays on untill the car is fully warmed up and then it starts flashing and car starts to misfire bad. Car shakes at idle. Bad gas mileage. Car runs terrible only when warmed up. When engine is cold it idles fine and drives fine ( or Atleast the misfire is not noticeable) . What my mechanic and I have checked so far: codes reads cylinder 4 misfire/random misfire, and egr insufficient flow. Cleaned out the egr and ports ( still get the egr insufficient flow code tho? Wtf?) great compression on all cylinders ( 210-220 psi on all 4 cylinders, new spark plugs, checked wires for cracks ( still kinda new not even a year old ). checked cap and rotor and even swapped with another cap and rotor, swapped in another coil and distributor and nothing. Checked the injector for a pulse with some sort of injector testor and it was pulsing. Fuel filter is not even a year old either, always use premium gas. what we will be trying later: swap around injectors to see if the problem goes to another cyliInder to point out a bad injector, swap ecu. After that, whe don't know what else to check for. Anyideas will be greatly appreciated, I posted this same question on pp.com but didn't get much help. Thanks in advance. I don't get it, oil change every 3 months and the car always ran like a champ with minor issues every now and then but this takes home the cake with complexity. Other research done points out to check the timming or a bad fuel injector pressure regulator.
Reply With Quote
  #2 (permalink)  
Old 12-11-2014, 09:43 AM
ProjectPrelude95's Avatar
Platinum Member
 
Join Date: Jan 2012
Location: Central Jersey
Posts: 2,416
iTrader: (12)
ProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

i would check your ignition timing. and do a fuel pressure test. although it might be something sensor related. i would go to the DIY section, to the final idle thread. use the chart there to check for your issue, and follow instructions there. or download a service manual and go to the fuel supply system section and follow the chart there too. those would be my moves. service manuals can also be found in the DIY section.
Reply With Quote
  #3 (permalink)  
Old 12-11-2014, 08:26 PM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by ProjectPrelude95 View Post
i would check your ignition timing. and do a fuel pressure test. although it might be something sensor related. i would go to the DIY section, to the final idle thread. use the chart there to check for your issue, and follow instructions there. or download a service manual and go to the fuel supply system section and follow the chart there too. those would be my moves. service manuals can also be found in the DIY section.
Ok sounds good, I was hoping someone on here had the same problem at some point or same symptoms and had a solution.
Reply With Quote
  #4 (permalink)  
Old 12-11-2014, 09:15 PM
ProjectPrelude95's Avatar
Platinum Member
 
Join Date: Jan 2012
Location: Central Jersey
Posts: 2,416
iTrader: (12)
ProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

i never had those issues personally, but im a certified auto repair tech, and those would be my next move as far as diagnostics. the mechanic your working with should have no problem performing the tests.
Reply With Quote
  #5 (permalink)  
Old 12-11-2014, 10:09 PM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by ProjectPrelude95 View Post
i never had those issues personally, but im a certified auto repair tech, and those would be my next move as far as diagnostics. the mechanic your working with should have no problem performing the tests.
Ok, so I should first check timming, then a fuel pressure test. And the try rearranging injectors, and finally swap ecu?
Reply With Quote
  #6 (permalink)  
Old 12-11-2014, 11:07 PM
ProjectPrelude95's Avatar
Platinum Member
 
Join Date: Jan 2012
Location: Central Jersey
Posts: 2,416
iTrader: (12)
ProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

you should follow the service manual as far as diagnostics. i recommend doing both tests. and swap injectors first to see if the problem goes from one cylinder to the next. cause then you know bad injector(easiest test) last test is an ecu swap which is usually *never* the problem
Reply With Quote
  #7 (permalink)  
Old 12-11-2014, 11:23 PM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by ProjectPrelude95 View Post
you should follow the service manual as far as diagnostics. i recommend doing both tests. and swap injectors first to see if the problem goes from one cylinder to the next. cause then you know bad injector(easiest test) last test is an ecu swap which is usually *never* the problem
I don't have a service manual, I'll have to download it and print all that out. Well, I'm officially done messing with the car me personally so I'm going to take it to yet another mechanic ( 3rd mechanic ) as the last two, including the one I did most troubleshooting with coulnd not figure out the problem, but then again their not the best experienced mechanics. yeah I hope it's not ecu because their not cheap.
Reply With Quote
  #8 (permalink)  
Old 12-12-2014, 04:17 PM
bykfixer's Avatar
Supreme Member
Photobucket
 
Join Date: Aug 2012
Location: could you repeat the question?
Posts: 11,121
iTrader: (4)
bykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

The ecu sets the timing. But you have a consistant #4 misfire...I'd go with the move the injector thing as a next step to see if another cylinder misfires, also try swapping a wire. Could be as simple as a bad connection.
__________________


Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
Reply With Quote
  #9 (permalink)  
Old 12-12-2014, 05:42 PM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by bykfixer View Post
The ecu sets the timing. But you have a consistant #4 misfire...I'd go with the move the injector thing as a next step to see if another cylinder misfires, also try swapping a wire. Could be as simple as a bad connection.
It's weird because if you reset the ecu and start to drive for 5-10 min then the ligth will come on and flash and the engine will misfire really bad. If you pull the codes then it will read multiple random misifre in all cylinders but then they go away and then it's just cylinder 4 misifre. by swapping wire, do you mean swapping injector connectors with each other? Because I don't think they can reach out that far.
Reply With Quote
  #10 (permalink)  
Old 12-12-2014, 06:06 PM
bykfixer's Avatar
Supreme Member
Photobucket
 
Join Date: Aug 2012
Location: could you repeat the question?
Posts: 11,121
iTrader: (4)
bykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Gotcha. So it goes from misfire at any given cylinder to a steady #4? I wonder if that's a confused ecm sending out too much fuel until it finally knows what to send based on the thinking the egr is malfunctioning. But there ends up being something wrong in cylinder #4... I wonder if you don't have 2 issues at the same time..and your valves in #4 are causing the issue there. You say compression test was done. But are your valves operating proper? One sticking perhaps?
Sorry, I meant spark plug wire if #3 will reach #4...if not, a known good wire.
Like you did cap, coil etc.

Running ok when cold but misfire when it's warm seems like a fuel related thing to me. But it is certainly seemingly related to temperature. Timing is advanced so air flow, fuel and fire are affected.

Crazy thought.. try cleaning your pcv and check for a cracked hose or grommet. That little dude gets overlooked a lot.
__________________


Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 12-12-2014 at 06:15 PM.
Reply With Quote
  #11 (permalink)  
Old 12-12-2014, 06:27 PM
ProjectPrelude95's Avatar
Platinum Member
 
Join Date: Jan 2012
Location: Central Jersey
Posts: 2,416
iTrader: (12)
ProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by bykfixer View Post
The ecu sets the timing. But you have a consistant #4 misfire...I'd go with the move the injector thing as a next step to see if another cylinder misfires, also try swapping a wire. Could be as simple as a bad connection.
the ecu sets everything electronically controlled fuel and ignition timingwise, but by loosening and turning the distributor clockwise and counterclockwise retard and advance ignition timing.
Reply With Quote
  #12 (permalink)  
Old 12-12-2014, 07:23 PM
bykfixer's Avatar
Supreme Member
Photobucket
 
Join Date: Aug 2012
Location: could you repeat the question?
Posts: 11,121
iTrader: (4)
bykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

^^I agree...
But he says cylinder #4 is consistantly malfunctioning. I can see where timing could cause his random misfire. But it seems something is amiss with combustion in #4 from what he's saying.
Unless the ecm is malfunctioning for just that one cylinder...they should focus on the mechanical stuff for that one until all items controlling it like valves, spark, fuel etc are tried and ruled out
__________________


Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
Reply With Quote
  #13 (permalink)  
Old 12-12-2014, 08:37 PM
ProjectPrelude95's Avatar
Platinum Member
 
Join Date: Jan 2012
Location: Central Jersey
Posts: 2,416
iTrader: (12)
ProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond reputeProjectPrelude95 has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

i know, i was just posting in response to the part you said ecu sets the timing.
Reply With Quote
  #14 (permalink)  
Old 12-12-2014, 09:51 PM
bykfixer's Avatar
Supreme Member
Photobucket
 
Join Date: Aug 2012
Location: could you repeat the question?
Posts: 11,121
iTrader: (4)
bykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Gotcha.

So could the didtributor be causing a misfire in the one cylinder 95? I know a faulty one can cause misfire, but always figured it would be a random thing...

You the ase guy. I only stayed at a holiday express.lol
__________________


Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
Reply With Quote
  #15 (permalink)  
Old 12-13-2014, 02:07 AM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

yeah, Rigth after resetting ecu and driving I will have random misfires on all cylinders and a flashing cel, but after like 30 minutes of driving, or just sitting then its strictly cylinder number 4 only and that's it, misifre detected( not random ) and I still get an egr insufficient flow code even tho we cleaned the heck out the valve and the ports. yes, compression is very good( 210-225 psi on all 4 cylinders ) and yes, we tried swapping a different spark plug for cylinder 4 and nothing ( I got some blue ngk ones and there less than a year old) whe sprayed a lot of water at the wires and around the coil to check for any signs of arcing or shorts and we got nothing. And yes, I went out of my way and got a used dizzy to swap out and that did nothing also. So In short, we ruled out everything ignition wise as we swapped everything and got nothing( dizzy, cap, rotor, coil, plugs, wires). Again, the car runs normal when cold ( cel on but not flashing ) then 10-15 minutes after driving and it's nice and hot the cel ligth will begin to flash and the car will have a noticeable misfire when accelerating and u can feel it at idle, and hear it by the exhaust. a lot of ppl are saying check timming and fuel pressure so I will do that next for sure. It just sucks that the car is out of commission because it used to run so good with no issues.
Reply With Quote
  #16 (permalink)  
Old 12-15-2014, 11:41 AM
lukegreen's Avatar
Bronze Member
 
Join Date: Jul 2014
Location: The Buckeye State
Posts: 123
iTrader: (0)
lukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud of
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

I have a 2000 prelude and I did the h23a swap and I have the same problem. Did you buy your car with the h23a or did you do the swap yourself? The problem is the jdm cps (crank position sensor) is in the distributor, not on the oil pump like the usdm h22a4. The correct way to do this swap is to replace the jdm h23a oil pump and balance shaft gear with the usdm h22a4 equivalent. The jdm cps is counting rotations of the cam, not rotations of the crank, like the usdm does. And since your probably still running the h22a4 computer it is reading the signal from the sensor as if it were on the crank, not the cam. The crank rotates twice for every rotation of the cam sooo its only sending a signal every other revolution of the engine and the computer sees this anomaly and throws a misfire code.

This is not someyhing to worry about, your engine is not going to be damaged, its just an annoying light that flashes when your showing an eclipse your tail lights.

The solution is to replace your oil pump and balance shaft gear with usdm h22a4 equivalents. You will also need a usdm distributor and external coil. Then you will need rewire it correctly for these new parts
__________________
2000 base h23a manual - consistent project, future dd
1993 f150 - consistent dd, future project
Reply With Quote
  #17 (permalink)  
Old 12-15-2014, 08:58 PM
bykfixer's Avatar
Supreme Member
Photobucket
 
Join Date: Aug 2012
Location: could you repeat the question?
Posts: 11,121
iTrader: (4)
bykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Hadn't thought of that Luke. Good points.

My son did the H22 to H23 switch-a-roo on the cps sensor and all that stuff you mentioned. And he had no issues what-so-ever.
Only CEL he got was for a gas cap vacuum leak. Swapped to a 5th gen prelude (from a nifty, but slightly differing Accord gas cap) and the lamp went away.
__________________


Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
Reply With Quote
  #18 (permalink)  
Old 12-17-2014, 01:11 AM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by lukegreen View Post
I have a 2000 prelude and I did the h23a swap and I have the same problem. Did you buy your car with the h23a or did you do the swap yourself? The problem is the jdm cps (crank position sensor) is in the distributor, not on the oil pump like the usdm h22a4. The correct way to do this swap is to replace the jdm h23a oil pump and balance shaft gear with the usdm h22a4 equivalent. The jdm cps is counting rotations of the cam, not rotations of the crank, like the usdm does. And since your probably still running the h22a4 computer it is reading the signal from the sensor as if it were on the crank, not the cam. The crank rotates twice for every rotation of the cam sooo its only sending a signal every other revolution of the engine and the computer sees this anomaly and throws a misfire code.

This is not someyhing to worry about, your engine is not going to be damaged, its just an annoying light that flashes when your showing an eclipse your tail lights.

The solution is to replace your oil pump and balance shaft gear with usdm h22a4 equivalents. You will also need a usdm distributor and external coil. Then you will need rewire it correctly for these new parts
I bought my prelude with the swap already done. Wow so that's the problem for sure? I don't understand how the car was running like a champ for a whole year and a half and then suddenly I get this issue, and the car runs like absolute crap once it's warmed. ( I don't drive it anymore, it's just sitting ) I can't fix it. Is there any way to check to see if I already have a usdm oil pump and balance shaft? ( maybe whoever did the swap actually did it the rigtg way?)well I did swap out the distributor with a usdm one I'm pretty sure because it was from a junkyard and it looks exactly the same as the old one and I do have an external ignition coil( also usdm) so replace oil pump and balance shaft? how hard is that for a mechanic and how much $$$ approx? Thanks for the help btw, really appreciate all the help I can get to get my lude back on the road.
Reply With Quote
  #19 (permalink)  
Old 12-17-2014, 09:53 AM
lukegreen's Avatar
Bronze Member
 
Join Date: Jul 2014
Location: The Buckeye State
Posts: 123
iTrader: (0)
lukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud of
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

After reading further into your symtoms I realize this is not your problem. If you have an external coil and a usdm distributor someone has already done the oil pump swap, if not you would have no cps sensor at all. I saw the title and thought your problem sounded familiar and posted that without so much as glancing at your first post explaining the cars symptoms, how poorly it runs and so on. I have the solid light at idle and flashing light at acceleration but I have cylinder 1 2 3 & 4 misfire codes and a random misfire codes, but my car does not misfire, infact my car runs amazing.

Sorry to hype you up but that is not the solution. Good luck
__________________
2000 base h23a manual - consistent project, future dd
1993 f150 - consistent dd, future project
Reply With Quote
  #20 (permalink)  
Old 12-17-2014, 09:56 AM
bykfixer's Avatar
Supreme Member
Photobucket
 
Join Date: Aug 2012
Location: could you repeat the question?
Posts: 11,121
iTrader: (4)
bykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond reputebykfixer has a reputation beyond repute
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!


^^ the 'cord' to the tdc/cps sensors as seen from below
If you see a cord coming from behind the crank pulley heading up the engine towards the power steering switch, you have the usdm stuff already. There is a gray connector it hooks to about half way up the engine.

The pic is how I fastened my sons with a zip tie to the power steering lines. So it won't snare in the axle or get rubbed by the boot. You can see the cord from connector point, down some from on top of the engine. You'll see a cord ducking in behind the crank pulley. Look down from the motor mount area.
The H23 timing cover does not have a hole for the cord keeper. You can add one but space is tight for proper drilling once the motor is installed.
__________________


Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 12-17-2014 at 10:08 AM.
Reply With Quote
  #21 (permalink)  
Old 12-17-2014, 02:03 PM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by lukegreen View Post
After reading further into your symtoms I realize this is not your problem. If you have an external coil and a usdm distributor someone has already done the oil pump swap, if not you would have no cps sensor at all. I saw the title and thought your problem sounded familiar and posted that without so much as glancing at your first post explaining the cars symptoms, how poorly it runs and so on. I have the solid light at idle and flashing light at acceleration but I have cylinder 1 2 3 & 4 misfire codes and a random misfire codes, but my car does not misfire, infact my car runs amazing.

Sorry to hype you up but that is not the solution. Good luck
oh ok, thanks anyway tho. is it possible to still have the usdm distributor and external coil but still have the jdm cps and drive shaft stuff? i will go and check it i have that wire like in the picture below ( btw. thats by the crank pulley and by the timming belt side correct? )
Reply With Quote
  #22 (permalink)  
Old 12-17-2014, 08:00 PM
lukegreen's Avatar
Bronze Member
 
Join Date: Jul 2014
Location: The Buckeye State
Posts: 123
iTrader: (0)
lukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud of
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Balance shaft. And I highly doubt that, but its not impossible. Do as bykfixer said, look around the bottom of the timing cover for sensor wires. If it was ok for a year and a half and just recenty contracted these problems this isnt your problem, you would have had the light since you bought the car
__________________
2000 base h23a manual - consistent project, future dd
1993 f150 - consistent dd, future project
Reply With Quote
  #23 (permalink)  
Old 12-18-2014, 03:13 AM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by lukegreen View Post
Balance shaft. And I highly doubt that, but its not impossible. Do as bykfixer said, look around the bottom of the timing cover for sensor wires. If it was ok for a year and a half and just recenty contracted these problems this isnt your problem, you would have had the light since you bought the car
Then that's defenetly not the problem because it was drove strong for a long time untill this happened and it drive fine when I first got it also. Ok, I will defenetly check to see if I have a sensor wire coming from around the bottom side of the timming cover. since, this is ruled out any other suggestions?
Reply With Quote
  #24 (permalink)  
Old 12-22-2014, 01:58 PM
I'm New
 
Join Date: Dec 2014
Posts: 19
iTrader: (0)
mykizism is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by pike0825 View Post
Then that's defenetly not the problem because it was drove strong for a long time untill this happened and it drive fine when I first got it also. Ok, I will defenetly check to see if I have a sensor wire coming from around the bottom side of the timming cover. since, this is ruled out any other suggestions?
Did you ever swap the fuel injector around to test? I read that you checked for injector pulse, so the injector is not stuck, it is pulsing and opening and closing, but how sure are you that it is spraying fuel?

A bad fuel injector (still working but clogged) describes your situation (runs well cold but misfires when hot).
__________________
Garage Park
1995 Nissan 240SX
1999 Prelude Turbo
2006 Acura TL - Navigation

http://www.honda-tech.com/zerothread/1673078 5th Gen Engine bay shave
Reply With Quote
  #25 (permalink)  
Old 12-23-2014, 04:07 AM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by mykizism View Post
Did you ever swap the fuel injector around to test? I read that you checked for injector pulse, so the injector is not stuck, it is pulsing and opening and closing, but how sure are you that it is spraying fuel?

A bad fuel injector (still working but clogged) describes your situation (runs well cold but misfires when hot).
Not yet, I've been putting off fixing the car for the holidays. Will try this and hopefully get the car running soon.
Reply With Quote
  #26 (permalink)  
Old 12-23-2014, 12:51 PM
lukegreen's Avatar
Bronze Member
 
Join Date: Jul 2014
Location: The Buckeye State
Posts: 123
iTrader: (0)
lukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud oflukegreen has much to be proud of
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Swap the fuel injector and see if the problem transfers to another cylinder. If the problem persists in cylinder 4 after swapping injectors with another cylinder you may have a bad head gasket. Does the car seem to consume coolant? If so you may have water leaking through the gasket into cylinder 4 when the engine warms up and builds pressure in the cooling system. I had this problem with the original h22a4 in my car.

Do this just to humor me, loosen the radiator cap but to avoid splashing do not remove it, and start the car, drive it around and let it get up to temperature and see if it still runs poorly. If so this is not your problem, if not you may have a bad head gasket my friend.
__________________
2000 base h23a manual - consistent project, future dd
1993 f150 - consistent dd, future project

Last edited by lukegreen; 12-23-2014 at 01:03 PM.
Reply With Quote
  #27 (permalink)  
Old 12-23-2014, 04:17 PM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Quote:
Originally Posted by lukegreen View Post
Swap the fuel injector and see if the problem transfers to another cylinder. If the problem persists in cylinder 4 after swapping injectors with another cylinder you may have a bad head gasket. Does the car seem to consume coolant? If so you may have water leaking through the gasket into cylinder 4 when the engine warms up and builds pressure in the cooling system. I had this problem with the original h22a4 in my car.

Do this just to humor me, loosen the radiator cap but to avoid splashing do not remove it, and start the car, drive it around and let it get up to temperature and see if it still runs poorly. If so this is not your problem, if not you may have a bad head gasket my friend.
Coolant level seems fine.
Reply With Quote
  #28 (permalink)  
Old 01-27-2015, 09:17 PM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

So I finally had a shop find out what the problem is. cylinder number 4 is missfiring due to bad valves. they said that it will cost $1,400 to remove the head and take it a a machine shop and then put it back on. a lot more $$$ than I thought that's for sure lol.
Reply With Quote
  #29 (permalink)  
Old 01-28-2015, 01:01 AM
Bronze Member
 
Join Date: Oct 2014
Location: Indianapolis, In
Posts: 123
iTrader: (0)
ThundagooseBB6 has much to be proud ofThundagooseBB6 has much to be proud ofThundagooseBB6 has much to be proud ofThundagooseBB6 has much to be proud ofThundagooseBB6 has much to be proud ofThundagooseBB6 has much to be proud ofThundagooseBB6 has much to be proud ofThundagooseBB6 has much to be proud ofThundagooseBB6 has much to be proud of
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

Hi there,

How can they diagnose bad valves with out yet taking the head off? I would hold off on that for a minute..




Check your EGR Valve out again. Make sure the electrical plug that goes into it is on all the way, and the wires are in tact. There is also a possibility the valve is not closing, causing the exhaust to leak into the intake, and cause your random misfiring. When you say you cleaned the valve and ports, did you do like in this video?


Sounds to me like it could be an EGR problem since you still get EGR code, have random misfires, and then the EGR valve is right next to the constantly misfiring cylinder.. It's cheaper to re-check all that stuff than pull the head and start doing possibly un-needed head work
__________________


Build Thread
ThundagooseBB6- 1998 Base SC

Last edited by ThundagooseBB6; 01-28-2015 at 01:11 AM.
Reply With Quote
  #30 (permalink)  
Old 01-29-2015, 11:17 PM
pike0825's Avatar
Junior Member
 
Join Date: Apr 2013
Location: illinois
Posts: 97
iTrader: (0)
pike0825 is on a distinguished road
Re: flashing CEL. Cylinder 4 misfire really hard to diagnose. Please help!

It was an ase certified shop so I would be pretty mad of it was bull**** lol. They did a computerized compression test to see how much compression cylinder 4 is holding while it's running. and they said it's low in compression due to cylinder 4 valves. as far as egr goes I can't see the video but I took it to another shop who used the Honda puller plug kit to remove only the top 4 port plugs on the intake manifold as well as the egr and ran compressed air and some solution in there to get all the carbon out. They left me with a dirty engine bay so I assumed they got all of it out. yeah I'm defenetly taking it to another shop for a second oppinion, but I'm finally glad that Atleast 1 of 4 shops was able to Atleast give me an idea of what the problem is. does $1,400 sound Rigth for a valve job. Like removing the head, machine shop it, and put it back in with all new seals, oil, water pump, timming belt, and all that stuff?
Reply With Quote
Reply

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
FLASHING CEL, returns p0131 (o2 sensor), but no misfire codes? zadeh79 5th Gen Honda Prelude 1 01-12-2012 11:25 PM
2nd Cylinder Misfire help! eMTy1989 5th Gen Honda Prelude 12 11-13-2011 11:40 AM
#2 cylinder misfire, WTF do i do?! vdubsnkawis 5th Gen Honda Prelude 47 09-12-2010 05:35 PM
#1 cylinder misfire DEFTONES 5th Gen Honda Prelude 16 05-20-2010 03:31 PM
Misfire cylinder #2 Fliperflop 5th Gen Honda Prelude 6 12-15-2009 08:27 AM


All times are GMT -4. The time now is 12:31 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.