code 32 only on highway driving?
Thread Starter
Racer
Joined: Feb 2000
Posts: 372
Likes: 1
From: Victoria British Columbia
code 32 only on highway driving?
I get code 32 only after driving at highway speeds(50-70)
30 minutes or so give or take a few minutes.This is the only time I get 32.The egr is brand new Delco.Anyone have any ideas what might be causing this? Thanks
30 minutes or so give or take a few minutes.This is the only time I get 32.The egr is brand new Delco.Anyone have any ideas what might be causing this? Thanks
Team Owner
Joined: Sep 2001
Posts: 62,159
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Re: code 32 only on highway driving? (sailrmon)
Tightening my gas cap eliminated mine, the ECM was registering a loss of vacuum.
Burning Brakes
Joined: Jul 2002
Posts: 871
Likes: 0
From: Costa Mesa CA
Re: code 32 only on highway driving? (sailrmon)
Code 32 is set in the ECM when the following conditions are met:
1. Coolant temp is greater than 80 degrees C (176F).
2. EGR duty cycle commanded by the ECM is greater than 75%.
3. TPS is less than 1/2 throttle but not at idle.
4. Codes 21,22,23,33, and 34 not present.
The above conditions must be present for about 4 minutes.
The most common reason for code 32 present in our year C4's is a malfuncting EGR switch. Replace that one-wire device on the heat-riser pipe coming up from the right exhaust. The one with the silver insulation cloth around it. About $20.
BIG JIM
1. Coolant temp is greater than 80 degrees C (176F).
2. EGR duty cycle commanded by the ECM is greater than 75%.
3. TPS is less than 1/2 throttle but not at idle.
4. Codes 21,22,23,33, and 34 not present.
The above conditions must be present for about 4 minutes.
The most common reason for code 32 present in our year C4's is a malfuncting EGR switch. Replace that one-wire device on the heat-riser pipe coming up from the right exhaust. The one with the silver insulation cloth around it. About $20.
BIG JIM
Instructor
Joined: Feb 2001
Posts: 171
Likes: 0
From: Raleigh North Carolina
code 32 on a '93 LT-1
I'm getting the "32" after driving about 5 minutes above 70 mph. It doesn't show up at slower speeds.
A lot of the code 32 discussions seem to be for the L-98 engines.
Anybody know about the 32 code on the LT-1????
I have replaced the EGR solenoid and the MAP sensor. The EGR valve itself seems to be working ok, but I guess that's the next thing I will replace. I have recently put ACCEL injectors in, but I have had the "32" popping up or about a year now. I usually just ignore it, and it goes away after about an hour of driving.......or I can stop and restart the car and the code is gone. It usually doesn't come back after the restart.
It would be nice to have the code GONE for good!!!!!!!
Jim
[Modified by Jimi Lane, 9:08 AM 9/16/2002]
A lot of the code 32 discussions seem to be for the L-98 engines.
Anybody know about the 32 code on the LT-1????
I have replaced the EGR solenoid and the MAP sensor. The EGR valve itself seems to be working ok, but I guess that's the next thing I will replace. I have recently put ACCEL injectors in, but I have had the "32" popping up or about a year now. I usually just ignore it, and it goes away after about an hour of driving.......or I can stop and restart the car and the code is gone. It usually doesn't come back after the restart.
It would be nice to have the code GONE for good!!!!!!!
Jim
[Modified by Jimi Lane, 9:08 AM 9/16/2002]
Thread Starter
Racer
Joined: Feb 2000
Posts: 372
Likes: 1
From: Victoria British Columbia
Re: code 32 only on highway driving? (sailrmon)
Thanks for the replys guys.Vader was your gas cap oem or after market?I replaced mine with a locking one for peace of mind.I'm gonna try putting the oem back on and see if it makes any difference.If not I'll try the temp sensor.Thanks again :chevy
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