ECM Code 32
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: ECM Code 32 (Dudeurgettnavette)
Code 32 is EGR Failure and can come from two cases.
1) If it shows after startup the EGR is stuck open; 2) if it shows after cruzin for a few minutes it's becaure the EGR is not seen as open. The first is obvious; the second takes some explanation.
There are three components to this system: the EGR valve under the rear of the plenum, the EGR solenoid under the front ofthe plenum and the EGR Temp sw in the top of the EGR tube that runs from the right exhaust pipe into the intake manifold.
In case (1) either the EGR valve is stuck open or the EGR Temp sw is shorted closed.
In case (2) there may be a vacuum leak, the EGR solenoid may be defective, the EGR valve may be stuck open, the EGR Temp sw may not be closing when the ECM has called for EGR open.
Now that you know how this system works you will see how to diagnose the problem and isolate the fault.
1) If it shows after startup the EGR is stuck open; 2) if it shows after cruzin for a few minutes it's becaure the EGR is not seen as open. The first is obvious; the second takes some explanation.
There are three components to this system: the EGR valve under the rear of the plenum, the EGR solenoid under the front ofthe plenum and the EGR Temp sw in the top of the EGR tube that runs from the right exhaust pipe into the intake manifold.
In case (1) either the EGR valve is stuck open or the EGR Temp sw is shorted closed.
In case (2) there may be a vacuum leak, the EGR solenoid may be defective, the EGR valve may be stuck open, the EGR Temp sw may not be closing when the ECM has called for EGR open.
Now that you know how this system works you will see how to diagnose the problem and isolate the fault.
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Re: ECM Code 32 (bdtenore)
I know 1989 was the last year the L-98 used the egr temp switch. I will bet the LT1 does not have one either.
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