Code 32 (EGR) diagnostics
Thread Starter
Instructor
Joined: Aug 2002
Posts: 198
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From: Yucaipa CA
Code 32 (EGR) diagnostics
My '90 L98's Check Engine light came on for a period of time last night and then went out. I checked the code memory today an EGR fault (code 32) was displayed. The diagnostic check looks simple enough but when I attempted to pull the vacuum hose "manifold" off of the EGR solenoid it did not pull off as easily as I expected. Should it pull straight off of the solenoid or is there a retainer that I cannot see? I always worry when these things seem harder to remove than I expect. :confused:
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Re: Code 32 (EGR) diagnostics (cash's90)
If what you are referring to is that rubber piece with 2 vaccum hoses on the EGR solenoid, next to the thermostat housing, it pulls off with some neddle nose pliers. It is only pressed in horizontally. No clips or anything.
I just went through this a few days ago. I also got the Code 32 flashed.
I replaced the EGR switch that is threaded to the EGR pipe and the "Check Engine" light does not come on anymore.
Here is a website you might find useful, if you have not alredy hear about. http://www.c4vettes.com/ecm.htm
It has descriptions of trouble codes and their most common cause.
It has helped me out a lot.
:thumbs: :D
[Modified by 86PACER, 1:01 AM 12/29/2003]
I just went through this a few days ago. I also got the Code 32 flashed.
I replaced the EGR switch that is threaded to the EGR pipe and the "Check Engine" light does not come on anymore.
Here is a website you might find useful, if you have not alredy hear about. http://www.c4vettes.com/ecm.htm
It has descriptions of trouble codes and their most common cause.
It has helped me out a lot.
:thumbs: :D
[Modified by 86PACER, 1:01 AM 12/29/2003]
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Code 32 (EGR) diagnostics (cash's90)
Indeed you are wise to use care in handling those hard plastic vacuum lines.
I carefully pry that vacuum connector away from the EGR solenoid fittings with a flat blade screw driver till the line connector is loose.
Also there is a diagnostic method on my site (link in sig. below) that uses engine vacuum for fault isolation.
I carefully pry that vacuum connector away from the EGR solenoid fittings with a flat blade screw driver till the line connector is loose.
Also there is a diagnostic method on my site (link in sig. below) that uses engine vacuum for fault isolation.
