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

Thread Title
Vacuum hose question

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 08-25-2014, 09:24 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Vacuum hose question

Hey guys/gals, new member here.

Anyways, just purchased a 98 base a couple of weeks ago after many years of wanting a Prelude. It ended up having an ECU from a 92 civic in it, engine from a 99 (I think...) an internal coil distributor (should have external I think)... And probably other goodies I'm not aware of yet. Aside from that, we have her purring like a kitten now...minus random misfire all cylinder codes hehe.

Ok, rambling here... So, what hose is this? http://i.imgur.com/1KwNpi5.jpg ?? I've searched for diagrams but nothing quite seems to match up. Granted I'm tired and have likely overlooked something. It's the lower short hose that seems disconnected from something.

Any help is appreciated. Once this is solved, we will see if the codes stay gone, as the car is running excellent.

EDIT:

We've replaced the ECU to a 98 base ECU, then after looking at the stamp on the engine (H22A 3000145) that it's a 99, yet the vin is a 98. The car truly does run very well. Vtec is working now, gas mileage seems normal.

So at this point, I'm trying to find out what's causing the misfire codes (all cylinders/random), and what the vacuum hose is "supposed to go to". It's capped off as of yesterday.

Last edited by Gmork; 08-27-2014 at 01:55 PM.
Reply With Quote
  #2 (permalink)  
Old 08-25-2014, 09:27 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

Also, forgot to mention that that hose isn't numbered like the rest, so for a new honda owner it's a tad more confusing.

Last edited by Gmork; 08-27-2014 at 01:55 PM.
Reply With Quote
  #3 (permalink)  
Old 08-27-2014, 12:02 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: Vacuum hose question

Take it off the IM and put a cap in it. Or put a golf tee in it like it is.
__________________


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
  #4 (permalink)  
Old 08-27-2014, 12:39 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

It's capped off currently, and still running fine. Well, minus the misfire codes. Could this distributor be causing it? The one that's on there currently is an internal coil dizzy, but I'm fairly certain the car came with an external. I'm not sure how much that matters, unless it's a sensor thing I'm not aware of.

Thanks again for the help.
Reply With Quote
  #5 (permalink)  
Old 08-27-2014, 01:39 PM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
Re: Vacuum hose question

Since it's a civic ECU, I'm putting money on it's for your IAB's.
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
  #6 (permalink)  
Old 08-27-2014, 01:49 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

Sorry, should have stated that we've replaced the ECU. Going to edit the first post... apologies.
Reply With Quote
  #7 (permalink)  
Old 08-27-2014, 02:43 PM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
Re: Vacuum hose question

Doesn't change anything. Civic ECU's can't control IAB's (Intake Air Butterfly) valves, basically secondary valves in the IM that open at a certain RPM.
The canister/solenoid that controls these is under the IM (where that hose LOOKS like it's going), but only YOU can tell US where that hose is going. There's no way we can 100% guaranteed tell you what 1 hose is that looks like the other 1000 in the engine bay.
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
  #8 (permalink)  
Old 08-27-2014, 03:41 PM
static420's Avatar
iTell water where to go

 
Join Date: Aug 2010
Location: Planet of the rains
Posts: 1,867
iTrader: (0)
static420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond repute
Re: Vacuum hose question

Looks a bit shirt to be the canister hose, looks almost as if its for the map sensor, but then engine would die if that wasnt connected... lemme dig up a pic

H23 Vac Line Diagram and Pics.JPG

Looks like it is for what OGS said...
the IAB, when its connected you'll get more power above 3600 or 4600 rpm, cant remember which.
__________________

Quote:
Originally Posted by Sideswipe SI View Post
Youth is truly wasted on the young

Last edited by static420; 08-27-2014 at 03:45 PM.
Reply With Quote
  #9 (permalink)  
Old 08-27-2014, 03:45 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

Twokex, there already is a hose going to the canister under the IM. The confusion is coming from the second hose beside that one. Every diagram I look at, shows only one vacuum hose in that location, yet I have two. O_o
Reply With Quote
  #10 (permalink)  
Old 08-27-2014, 03:50 PM
static420's Avatar
iTell water where to go

 
Join Date: Aug 2010
Location: Planet of the rains
Posts: 1,867
iTrader: (0)
static420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond repute
Re: Vacuum hose question

thats cause you have only one port on the side, for some reason you have 2 in the back...
one should be cruise control, the other should be egr solenoid, and one for IAB, they all se roughly the same vac pressure, so I dont think it matters which hose goes where.

You havent been able to spot something that is unconnected yet, like an open orifice somewhere?
__________________

Quote:
Originally Posted by Sideswipe SI View Post
Youth is truly wasted on the young

Last edited by static420; 08-27-2014 at 03:58 PM.
Reply With Quote
  #11 (permalink)  
Old 08-27-2014, 04:00 PM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
Re: Vacuum hose question

As you can see, we're not able to magically guess where a random hose goes to, in YOUR engine bay.

YOU'RE going to have to follow it, and see what it leads to. If you don't know what the component is that it's going to, post up a pic of THAT, not just the end of a random vacuum hose.
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
  #12 (permalink)  
Old 08-27-2014, 04:14 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

Thanks Static, when I get a chance I'll go out and use that diagram to double check routing of the vacuum lines. I have a feeling the cruise control actuator line is routed incorrectly. I'm not at my car at the moment, but I think the location for the intake control solenoid valve, on the IM is being used for the CC actuator, so I'll need to see that the intake control is vacuum'd properly.

New to Honda's, and most everything looked to have vacuum lines running to it, so it was throwing me off.
Reply With Quote
  #13 (permalink)  
Old 08-27-2014, 04:22 PM
static420's Avatar
iTell water where to go

 
Join Date: Aug 2010
Location: Planet of the rains
Posts: 1,867
iTrader: (0)
static420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond repute
Re: Vacuum hose question

If that hose ends up being too short for what it connects to, you may have a longer one connected to something nearby. You can always swap hoses. Or buy clear running at home depot, for true baller status!

Clear pics of the whole area would help.
__________________

Quote:
Originally Posted by Sideswipe SI View Post
Youth is truly wasted on the young
Reply With Quote
  #14 (permalink)  
Old 08-27-2014, 04:46 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

Here's a photo from yesterday that I forgot to add. http://i.imgur.com/oz1crDH.jpg this one leads me to believe that the hose with the blue ziptie on it, should be going to EVAP, but at the moment it's routed to the cruise control actuator (I think, not at the car atm). When I get out of work, I'll verify that, locate EVAP, and make sure it's got all it's rubbery parts connected.
Reply With Quote
  #15 (permalink)  
Old 08-27-2014, 06:14 PM
static420's Avatar
iTell water where to go

 
Join Date: Aug 2010
Location: Planet of the rains
Posts: 1,867
iTrader: (0)
static420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond repute
Re: Vacuum hose question

smells like progress, but I still cant tell anything from that pic !
__________________

Quote:
Originally Posted by Sideswipe SI View Post
Youth is truly wasted on the young
Reply With Quote
  #16 (permalink)  
Old 08-27-2014, 06:52 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

Home now, and comparing that diagram with what's under my hood, leads me to believe it's not the right diagram or someone moved stuff around. Hose 20, that's supposed to go to the bottom of the evap solenoid valve, per the diagram, is going to a 3 connector section below my cruise control, which splits off to the back inside of the cc, and then to a canister below. 8, per diagram, goes to the correct location. 12 and 24 do as well, minus my ports being in different locations.

Anyways, this extra hose, should be part of the cruise control, if I'm going by the diagram, but in my car the cc is already taken care of due to this connector underneath. I'll try to get a decent shot.

I'm sure this is annoying, but I'm just not familiar with these cars at all. I may have a guy that works for honda looking at it Monday to help diagnose this misfire code, and see if he can figure it out, if I haven't already.

Photo soon..
Reply With Quote
  #17 (permalink)  
Old 08-27-2014, 07:06 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

The hose I have my thumb on is 20 on the diagram you posted. So I think that diagram may be incorrect for the h22a. Those vacuum runways (metal hoses) that look to be on the firewall in that diagram, do not exist in my engine bay. http://i.imgur.com/bsCGoVE.jpg
Reply With Quote
  #18 (permalink)  
Old 08-27-2014, 07:29 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: Vacuum hose question

Is that the hose that goes to that vacuum valve that hooks to the oem air cleaner box to operate the butterfly in the resonator?

Cap it and move on. But your random misfire could be the cps or tdc sensor, a compression issue or a slew of other possibilities...but it likely aint that hose.
__________________


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
  #19 (permalink)  
Old 08-27-2014, 07:37 PM
I'm New
 
Join Date: Aug 2014
Posts: 14
iTrader: (0)
Gmork is on a distinguished road
Re: Vacuum hose question

Number 8 on that diagram, heads up front on my car, and is split with connectors (which look factory and still numbered 8 on my hoses). One does go to the area you asked about.

I agree, there are many different things that could cause the cel, I highly doubt the free hose is he culprit. I've cleaned the egr valve, vtec solenoid, iacv, checked plugs, changed dizzy cap and rotor. Hopefully the guy I'm meeting Monday will work some magic and figure it out. Car runs great...
Reply With Quote
  #20 (permalink)  
Old 08-27-2014, 07:53 PM
static420's Avatar
iTell water where to go

 
Join Date: Aug 2010
Location: Planet of the rains
Posts: 1,867
iTrader: (0)
static420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond reputestatic420 has a reputation beyond repute
Re: Vacuum hose question

This is weird, all u need is an h22 diagram
__________________

Quote:
Originally Posted by Sideswipe SI View Post
Youth is truly wasted on the young
Reply With Quote
  #21 (permalink)  
Old 08-27-2014, 08:34 PM
I'm New
 
Join Date: Mar 2014
Posts: 3
iTrader: (0)
Timothy is on a distinguished road
Re: Vacuum hose question

it sounds like someone swapped that to a jdm h22 and was running a p28. the internal coil dizzy is what comes on the jdm engines. sounds like someone messed up when they were doing the wiring because the crank sensor from the h22a4 (factory engine from 5th gen) is not used on the jdm engine, those sensors are in the dizzy on the jdm h22.
the vacuum hose problem may also be solved if you start looking into jdm h22 stuff because i dont know if any vacuum lines are moved on the jdm intake manifold, but some may be.

Last edited by Timothy; 08-27-2014 at 08:37 PM. Reason: left something out
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
Vacuum hose eddiejb11 General Tech Talk 20 01-30-2014 08:06 PM
Help. Identify vacuum hose eddiejb11 General Tech Talk 3 12-07-2013 12:07 AM
vacuum hose question 1hendrixfan 5th Gen Honda Prelude 1 03-23-2013 05:06 PM
Vacuum hose not where its suppose to be KeepUp 5th Gen Honda Prelude 3 03-24-2012 02:53 PM
vacuum hose no.8?? sh98prelude 5th Gen Honda Prelude 5 09-11-2007 12:01 AM


All times are GMT -4. The time now is 08:25 AM.



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.