EGR problem ???
Thread Starter
Instructor
Joined: Aug 2007
Posts: 101
Likes: 0
From: Coos Bay Oregon
EGR problem ???
I have to get a code reader to see if I'm geting a # 32 as I think (very dangerous for me when I try that thinking thing) the Egr valve is the culprit on my 86.
The Service engine light comes on after 1/2 to an hours worth of continuous driving. Whe I shut down for 10 minutes or so the light does a vanishing act for another hour before coming on again.
Oil is full, motor purrs and am getting a solid average of 24 mpg. Any idea's ??
classcorvette1@yahoo.com or goodnbadd2@yahoo gets to me fastest. Really appreciate any input.
The Service engine light comes on after 1/2 to an hours worth of continuous driving. Whe I shut down for 10 minutes or so the light does a vanishing act for another hour before coming on again.
Oil is full, motor purrs and am getting a solid average of 24 mpg. Any idea's ??
classcorvette1@yahoo.com or goodnbadd2@yahoo gets to me fastest. Really appreciate any input.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Since the ECM throws the code after driving for a while it is NOT sensing the EGR flow after it is called for, which means 1) the EGR temp sensor in the EGR pipe is not functioning or 2) the EGR valve is not opening.
There is a diagnostic routine on my site.
There is a diagnostic routine on my site.
Last edited by 65Z01; Feb 7, 2009 at 01:00 PM.
Melting Slicks
Joined: Apr 2007
Posts: 2,678
Likes: 1
From: Atlanta Georgia
Is this the same for all C4s? or does it differ with engines? I have had H32 go off a few times after driving long distances but goes off after a while, the OP stated he had an early c4 but ive got a 95, so just checking if it differs with engines.
Instructor
Joined: Aug 2007
Posts: 107
Likes: 0
From: Lansdale PA
Sorry in advance I'm not trying to highjack this post but I need the egr switch and cannot find one anywhere. Mid America lists one in their new catalog but it is not available. My local GM dealer says it is not available, any ideas where I can get one?
Thank you
Thank you
Le Mans Master
Joined: Jul 2004
Posts: 6,229
Likes: 698
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
I have to get a code reader to see if I'm geting a # 32 as I think (very dangerous for me when I try that thinking thing) the Egr valve is the culprit on my 86.
The Service engine light comes on after 1/2 to an hours worth of continuous driving. Whe I shut down for 10 minutes or so the light does a vanishing act for another hour before coming on again.
Oil is full, motor purrs and am getting a solid average of 24 mpg. Any idea's ??
classcorvette1@yahoo.com or goodnbadd2@yahoo gets to me fastest. Really appreciate any input.
The Service engine light comes on after 1/2 to an hours worth of continuous driving. Whe I shut down for 10 minutes or so the light does a vanishing act for another hour before coming on again.
Oil is full, motor purrs and am getting a solid average of 24 mpg. Any idea's ??
classcorvette1@yahoo.com or goodnbadd2@yahoo gets to me fastest. Really appreciate any input.
Read my post from a few years ago that solved the switch problem for me. No code since
The switch for an 86 is $14.99 at Advance.
Team Owner
Joined: Jan 2003
Posts: 20,335
Likes: 264
From: Summerland B.C. Canada
You don't need a code reader, just a paper clip and the ability to count the flashing SES light. 
http://members.shaw.ca/corvette86/No...it%20Check.pdf
http://members.shaw.ca/corvette86/Code%2032.pdf
http://members.shaw.ca/corvette86/No...it%20Check.pdf
http://members.shaw.ca/corvette86/Code%2032.pdf
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Thread Starter
Instructor
Joined: Aug 2007
Posts: 101
Likes: 0
From: Coos Bay Oregon
Thank You VERY Much for all the information ! It's been 10 (or more) years since I had this problem come up. I was "pretty sure" of the problem & fix but not positive. Must be the age thing. I had a little clip type tool I got through Mid America in the early 90's which I must have given to "New" owners when I sold an 85 I restored. Have not seen a clip like that since but then again I haven't had need to look either,
Anyway, THANK YOU AGAIN !! Douglas C / Class Corvette
Anyway, THANK YOU AGAIN !! Douglas C / Class Corvette
