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

Thread Title
CEL knock sensor problem

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 02-08-2012, 05:27 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
CEL knock sensor problem

ok, i have a 96 si H23.

so this one night i was racing my buddy redlining the car and after we finished i noticed my CEL popped. so i hooked up my sensor and its saying its a Knock sensor code. so i reset my battery and everything and after about 10 minutes of light driving, the CEL came up again (knock sensor again).

anybody have any ideas whats causing this?
i have been running only premium gas

i believe it may be a bad sensor, but im not sure

im also worried that my engine is knocking periodically causing the sensor to trip but i dont hear any knocking what so ever (its running smoothly).

and also, is it safe to drive for now, or should i just play it safe and leave it be until i figure out the source of this problem?

i actually just read that code 23 (knock sensor) is pretty much stating the computer cant locate a working sensor, and not that it detects knocking in the engine. And that if the engine was actually knocking, it would throw a timing code.

is this correct?
Reply With Quote
  #2 (permalink)  
Old 02-08-2012, 06:27 PM
Cthulhuy's Avatar
Silver Member
 
Join Date: Jan 2011
Location: Dallas, Texas
Posts: 309
iTrader: (1)
Cthulhuy has a spectacular aura aboutCthulhuy has a spectacular aura about
Send a message via Skype™ to Cthulhuy
Re: CEL knock sensor problem

The only way to check for sure is to inspect and remove the knock sensor. I had the same issue, it could be a possible nick in the wire that leads to the knock in your case, but turned out to be a half-way broken sensor. As for driving, I'm not sure, I never drove my car while the knock sensor was removed.

Last edited by Cthulhuy; 02-08-2012 at 06:32 PM.
Reply With Quote
  #3 (permalink)  
Old 02-08-2012, 07:55 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

well i just went to replace it, and turns out it was already half way screwed out, and the wires connected to it were ripped off. should i just take it to a mech at this point?

and does anyone know if its safe to drive with the sensor off the engine?
Reply With Quote
  #4 (permalink)  
Old 02-08-2012, 08:02 PM
Cthulhuy's Avatar
Silver Member
 
Join Date: Jan 2011
Location: Dallas, Texas
Posts: 309
iTrader: (1)
Cthulhuy has a spectacular aura aboutCthulhuy has a spectacular aura about
Send a message via Skype™ to Cthulhuy
Re: CEL knock sensor problem

Ou snaps. Is the connector ripped off from the wire? If so, you probably could just solder on another connector from a scrap prelude and just cover in shrink-wrap. Just my personally option to save money, since I do not have much. Do you have a photo of the damage?
Reply With Quote
  #5 (permalink)  
Old 02-08-2012, 08:08 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

yup, thats the problem. i think ill just take it to a mech. it would be much easier to access from a lift. but yea ill take a pic in a sec.

and is the car ok to drive to the mechanic down the road with no knock sensor on the engine?
Reply With Quote
  #6 (permalink)  
Old 02-08-2012, 08:18 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

this is a pic of the knock sensor and the connector that attracts onto the sensor. as you can see the wires were torn off somehow, causing my CEL to come on

Reply With Quote
  #7 (permalink)  
Old 02-08-2012, 08:18 PM
Cthulhuy's Avatar
Silver Member
 
Join Date: Jan 2011
Location: Dallas, Texas
Posts: 309
iTrader: (1)
Cthulhuy has a spectacular aura aboutCthulhuy has a spectacular aura about
Send a message via Skype™ to Cthulhuy
Re: CEL knock sensor problem

Damn, bummer. That thing's ripped right at the connector. I'm not really sure, if you're not driving it so much while it's removed, it shouldn't be a problem.
Reply With Quote
  #8 (permalink)  
Old 02-08-2012, 08:21 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

ok cool, i guess ill just run it to the mech tomorrow and see what my options are. ill most likely have to order and new connector.
Reply With Quote
  #9 (permalink)  
Old 02-08-2012, 09:34 PM
RandallSharp's Avatar
Platinum Member
 
Join Date: Feb 2010
Location: Ohio
Posts: 2,172
iTrader: (3)
RandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond repute
Re: CEL knock sensor problem

Maybe you shouldn't be redlining your car and what I presume to be street racing.
__________________
Reply With Quote
  #10 (permalink)  
Old 02-08-2012, 11:18 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

dude,
whats the point of owning a prelude if your not going to have fun with it
honda made the h series engine to be reved, not driven like a grandma
Reply With Quote
  #11 (permalink)  
Old 02-08-2012, 11:58 PM
RandallSharp's Avatar
Platinum Member
 
Join Date: Feb 2010
Location: Ohio
Posts: 2,172
iTrader: (3)
RandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond repute
Re: CEL knock sensor problem

Quote:
Originally Posted by ledheadmatt10 View Post
dude,
whats the point of owning a prelude if your not going to have fun with it
honda made the h series engine to be reved, not driven like a grandma
Have fun on the track, not in the streets. Kill yourself, not the innocent that must suffer because kids like you want to make bad decisions. Rev it to hell and blow it up, but learn to fix it on your own if your only intent is to destroy it.
__________________
Reply With Quote
  #12 (permalink)  
Old 02-09-2012, 02:20 AM
Not So New
 
Join Date: Aug 2011
Location: Mesa,az
Posts: 29
iTrader: (0)
Dizzyenano is on a distinguished road
Re: CEL knock sensor problem

sorry if I'm a bit late for you, but yeah it's okay to drive without the knock sensor for a bit. once the CEL goes on i believe (anyone correct me if i'm wrong) it changes the timing and retards it a bit, mainly using more gas and running lean. You might smell more gas while you're parked in one spot because of it, But it is okay. Ive been driving mine for a year with that same CEL cause my engine doesn't have a knock sensor but the ECU is looking for one. Oh and mine doesn't knock either.

Last edited by Dizzyenano; 02-09-2012 at 02:21 AM. Reason: grammar
Reply With Quote
  #13 (permalink)  
Old 02-09-2012, 03:33 AM
I'm New
 
Join Date: Jan 2012
Location: bx new york/ orlando, fl
Posts: 24
iTrader: (0)
scarface1346 is on a distinguished road
Re: CEL knock sensor problem

That doesn't look like a stock knock sensor, I thought the stock one is square. I know my knock sensor is. Maybe that why wires ripped in the first place just guessing.
Reply With Quote
  #14 (permalink)  
Old 02-09-2012, 03:48 AM
Silver Member
 
Join Date: Nov 2011
Location: Pinole, CA
Posts: 455
iTrader: (1)
Travis is on a distinguished road
Re: CEL knock sensor problem

Ahh I have the cel on for my knock sensor on too and I'm planning on taking it in to the mechanic soon. Where is the knock sensor though? It looks as though it can't be hard to access
__________________
Reply With Quote
  #15 (permalink)  
Old 02-09-2012, 03:53 AM
Cthulhuy's Avatar
Silver Member
 
Join Date: Jan 2011
Location: Dallas, Texas
Posts: 309
iTrader: (1)
Cthulhuy has a spectacular aura aboutCthulhuy has a spectacular aura about
Send a message via Skype™ to Cthulhuy
Re: CEL knock sensor problem

Quote:
Originally Posted by Travis View Post
Ahh I have the cel on for my knock sensor on too and I'm planning on taking it in to the mechanic soon. Where is the knock sensor though? It looks as though it can't be hard to access
It's a tight spot to access. It's under the IM, and right above the oil filter. Well it was a bitch for me since I didn't have a lift.
Reply With Quote
  #16 (permalink)  
Old 02-09-2012, 04:52 AM
Silver Member
 
Join Date: Nov 2011
Location: Pinole, CA
Posts: 455
iTrader: (1)
Travis is on a distinguished road
Re: CEL knock sensor problem

Oh ok I'll check it out tomorrow after I put my new speakers in
__________________
Reply With Quote
  #17 (permalink)  
Old 02-09-2012, 06:34 AM
Silver Member
 
Join Date: Oct 2010
Location: Riverside
Posts: 475
iTrader: (0)
frankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond reputefrankyjmr has a reputation beyond repute
Re: CEL knock sensor problem

mann it seems everyone has this code. Mine went on about a month ago. Been DD it every day since them. No issues lol :) I'm gonna find the problem soon though. whenever I have time.
Reply With Quote
  #18 (permalink)  
Old 02-09-2012, 02:08 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

Quote:
Originally Posted by Cthulhuy View Post
It's a tight spot to access. It's under the IM, and right above the oil filter. Well it was a bitch for me since I didn't have a lift.
yea, if i were you i would go ahead and change my oil/filter when you go to access the sensor, it makes things much easier.
Reply With Quote
  #19 (permalink)  
Old 02-09-2012, 02:10 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

Quote:
Originally Posted by scarface1346 View Post
That doesn't look like a stock knock sensor, I thought the stock one is square. I know my knock sensor is. Maybe that why wires ripped in the first place just guessing.
no it is most definitely stock. i actually went and bought a replacement one for $110, but then returned it after i realized it was the wire, and not the actual sensor lol
Reply With Quote
  #20 (permalink)  
Old 02-09-2012, 02:12 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

Quote:
Originally Posted by Dizzyenano View Post
sorry if I'm a bit late for you, but yeah it's okay to drive without the knock sensor for a bit. once the CEL goes on i believe (anyone correct me if i'm wrong) it changes the timing and retards it a bit, mainly using more gas and running lean. You might smell more gas while you're parked in one spot because of it, But it is okay. Ive been driving mine for a year with that same CEL cause my engine doesn't have a knock sensor but the ECU is looking for one. Oh and mine doesn't knock either.
ok sweet, i was just worried becuase im about to sell my lude and i dont want to destroy anything (to bad..... =] ) before i let it go.

any advice on how to get this problem taken care of? i think i may need a new connector.....im assuming those are hard to get
Reply With Quote
  #21 (permalink)  
Old 02-09-2012, 02:18 PM
ledheadmatt10's Avatar
Bronze Member
 
Join Date: Sep 2011
Posts: 115
iTrader: (0)
ledheadmatt10 is on a distinguished road
Re: CEL knock sensor problem

Quote:
Originally Posted by RandallSharp View Post
Have fun on the track, not in the streets. Kill yourself, not the innocent that must suffer because kids like you want to make bad decisions. Rev it to hell and blow it up, but learn to fix it on your own if your only intent is to destroy it.
sounds like your missing out on alot :(. everybody dies, but not everybody lives. and thats what preludezone is for.....learning how to fix your lude when it breaks

PS. if its 3 in the morning in a deserted area, its relativity safe. nothing beat the adrenalin rush of taking a tight curve while stomping on the gas. more fun than a roller coaster in my opinion
Reply With Quote
  #22 (permalink)  
Old 02-09-2012, 07:40 PM
RandallSharp's Avatar
Platinum Member
 
Join Date: Feb 2010
Location: Ohio
Posts: 2,172
iTrader: (3)
RandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond reputeRandallSharp has a reputation beyond repute
Re: CEL knock sensor problem

Quote:
Originally Posted by ledheadmatt10 View Post
sounds like your missing out on alot :(. everybody dies, but not everybody lives. and thats what preludezone is for.....learning how to fix your lude when it breaks

PS. if its 3 in the morning in a deserted area, its relativity safe. nothing beat the adrenalin rush of taking a tight curve while stomping on the gas. more fun than a roller coaster in my opinion
Maybe you just can't see what I'm writing? The track provides more than enough fun. You can die if you want, like I said. You can't, however, risk others because you want to be an idiot. End of discussion. Don't EVER risk another person's life. That's not a privilege of yours.
__________________
Reply With Quote
  #23 (permalink)  
Old 02-09-2012, 10:31 PM
93h22's Avatar
Junior Member

 
Join Date: Nov 2011
Location: Ohio
Posts: 62
iTrader: (1)
93h22 is on a distinguished road
Re: CEL knock sensor problem

Quote:
Originally Posted by RandallSharp View Post
Maybe you just can't see what I'm writing? The track provides more than enough fun. You can die if you want, like I said. You can't, however, risk others because you want to be an idiot. End of discussion. Don't EVER risk another person's life. That's not a privilege of yours.
Amen.
__________________

1993 'Lude H22A

2001 YZ250F
Reply With Quote
  #24 (permalink)  
Old 02-10-2012, 03:20 PM
I'm New
 
Join Date: Jan 2012
Location: bx new york/ orlando, fl
Posts: 24
iTrader: (0)
scarface1346 is on a distinguished road
Re: CEL knock sensor problem

Your correct just noticed you had a 96. 97 and up used square pin type
Reply With Quote
Reply


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
Bad knock sensor instruktor 4th Gen Honda Prelude 25 09-03-2015 05:57 AM
Knock Sensor P0325 issue, new knock sensor no fix awdmaniac 5th Gen Honda Prelude 4 03-05-2012 09:02 PM
SH knock sensor ihubbard 5th Gen Honda Prelude 4 05-02-2011 01:37 AM
help me..knock sensor problem jebat General Tech Talk 4 04-02-2010 08:34 PM
Knock sensor help poncejose334 4th Gen Honda Prelude 3 08-03-2009 12:00 PM


All times are GMT -4. The time now is 03:55 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


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