Does a defective EGR valve affect the idling of a car? - Honda-Tech

Go Back   >
Log In 


Does a defective EGR valve affect the idling of a car?

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 08-17-2004, 11:38 AM   #1
Thread Starter
 
borristebel's Avatar
 
Join Date: Aug 2004
Location: jacksonville, fl, usa
Posts: 1
Default Does a defective EGR valve affect the idling of a car?

My 98 Prelude timing belt tensioner broke loose while driving on interstate highway. My car was disabled so I had it towed and had the timing belt and all the parts replaced. Everything works fine except it dies at idle.So the idle was raised at twice the recommended idle speed at 1500 rpm. What do you think is the problem?
borristebel is offline   Reply With Quote
Old 08-17-2004, 11:45 AM   #2
 
delguiner's Avatar
 
Join Date: Feb 2004
Location: montreal, QC, Canada
Posts: 384
Default Re: Does a defective EGR valve affect the idling of a car? (borristebel)

yes it does affect idling... I had the problem that my car would idle incredibly low so i blocked off the EGR... havent had the problem since.. good luck
delguiner is offline   Reply With Quote
Old 08-17-2004, 11:52 AM   #3
 
Join Date: Jun 2004
Location: Rocky Mount, VA, USA
Posts: 58
Default Re: Does a defective EGR valve affect the idling of a car? (delguiner)

if you block the egr it adds hp doesn't it?
92blackprelude is offline   Reply With Quote
Old 08-17-2004, 11:54 AM   #4
Junior Member
 
BLACK_DEL_SOL's Avatar
 
Join Date: Apr 2004
Location: fort benning,GA, US
Posts: 165
Default Re: Does a defective EGR valve affect the idling of a car? (delguiner)

if you block off a working egr valve does it affect you performance ? my buddy says yes that you lose hp ,but i say no that you gain slight hp 1-5. cause all it does is allow co2 to go back into the engine.
BLACK_DEL_SOL is offline   Reply With Quote
Old 08-17-2004, 12:02 PM   #5
 
delguiner's Avatar
 
Join Date: Feb 2004
Location: montreal, QC, Canada
Posts: 384
Default Re: Does a defective EGR valve affect the idling of a car? (92blackprelude)

if the EGR gets stuck open thats whats causing your bad idling and yes is does create a little hp... nothing very noticeable!
delguiner is offline   Reply With Quote
Old 08-17-2004, 02:15 PM   #6
Honda-Tech Member
 
SuperSlow's Avatar
 
Join Date: Nov 2003
Location: NORCAL, USA
Posts: 3,548
Default Re: Does a defective EGR valve affect the idling of a car? (delguiner)

Only if it is stuck. Otherwise, EGR usually operates at idle and cruise. Not really a power adder I thought.
SuperSlow is offline   Reply With Quote
Old 08-17-2004, 02:31 PM   #7
spnbb2
Guest
 
Posts: n/a
Default

my engein is throwing a code 12, egr valve, and it idles fine
  Reply With Quote
Old 08-17-2004, 04:08 PM   #8
 
delguiner's Avatar
 
Join Date: Feb 2004
Location: montreal, QC, Canada
Posts: 384
Default Re: (SPN BB2)

thats probably cause your EGR broke while it was in the closed position!
delguiner is offline   Reply With Quote
Old 08-17-2004, 08:14 PM   #9
 
sleepy_vtec's Avatar
 
Join Date: Jul 2004
Location: Murfreesboro, TN
Posts: 74
Default Re: (delguiner)

did you ever think it may have jumped timing and bent a valve?
sleepy_vtec is offline   Reply With Quote
Old 08-18-2004, 06:56 AM   #10
 
delguiner's Avatar
 
Join Date: Feb 2004
Location: montreal, QC, Canada
Posts: 384
Default Re: (sleepy_vtec)

now my idling is going good right after i blocked the EGR
delguiner is offline   Reply With Quote
Old 08-18-2004, 07:01 AM   #11
Member
 
Behan's Avatar
 
Join Date: Apr 2003
Location: Windsor, PA
Posts: 2,289
Default Re: (SPN BB2)

Quote:
Originally Posted by SPN BB2
my engein is throwing a code 12, egr valve, and it idles fine
Code 12 is the lift circuit code. It means your egr valve isn't opening. All you need to do is remove it and clean the carbon and reinstall.
Behan is offline   Reply With Quote
Old 08-18-2004, 04:52 PM   #12
Honda-Tech Member
 
nota944mechanic's Avatar
 
Join Date: Nov 2003
Posts: 228
Default

"
if you block off a working egr valve does it affect you performance ? my buddy says yes that you lose hp ,but i say no that you gain slight hp 1-5. cause all it does is allow co2 to go back into the engine." lol. the egr is closed when you are accelerating unless you are barely on the throttle. so blocking it will not add power.
nota944mechanic is offline   Reply With Quote
Old 08-18-2004, 10:47 PM   #13
 
sIcWiTiT's Avatar
 
Join Date: May 2002
Location: vero beach, FL
Posts: 112
Default Re: (nota944mechanic)

up fer da peeps
sIcWiTiT is offline   Reply With Quote
Old 08-19-2004, 05:35 AM   #14
 
sharkcohen's Avatar
 
Join Date: Jul 2002
Location: East Bay, CA, USA
Posts: 2,374
Default Re: (flosSIn)

The EGR is only open at part throttle. It's purpose is to cool the combustion temps during the stoich conditions of closed loop operation. It is also beneficial for reducing NOx emmisions (during part throttle). It is closed during open loop. Blocking the EGR does not increase performance.
sharkcohen is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
can running rich after timing belt adjustment danielc2155 Tech / Misc 4 06-22-2014 11:27 PM
97 civic surging idle jptype_r Honda Civic / Del Sol (1992 - 2000) 5 07-08-2013 06:03 PM
1992 Honda Accord low idle vibration dismember Honda Accord (1990 - 2002) 4 01-04-2012 02:35 AM
Slightly low/rough idle kornerk12 Honda Accord (1990 - 2002) 32 04-13-2009 05:33 PM
rough idling for my d16y7 motor, anyone help me??? ekguy Tech / Misc 1 10-10-2003 11:41 PM


Tags
2003, affect, bad, block, defective, egr, erg, honda, hp, performance, pilot, prelude, timing, transmission, valve

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -8. The time now is 01:13 AM.



Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.