Code 32 on 1991 L98
Thread Starter
Intermediate
Joined: Feb 2013
Posts: 44
Likes: 0
From: South Fl
Code 32 on 1991 L98
Code 32: EGR System
After changing injectors, tps sensor, all distributor internals, thermostat, spark plugs and wires I took my "new" car for its first real drive. After about 10 minutes (2 miles) of extremely conservative driving in stop and go traffic I got a CEL. The car immediately struggled to stay alive so I turned around and drove it home. I surprisingly made it and just took my other car to work.
I had some time to work on the car today and the first step was to check the CEL and it yielded what I believe is code 32, three relatively quick pulses, a pause and then two back to back pulses and it then repeats and a code 12 is thrown in there.
http://tech.corvettecentral.com/2012...egr-diagnosis/
I followed and I got as far as applying a vacuum to the EGR valve with the key on, engine off , diagnositc grounded.
EGR valve will hold 20" of vacuum for about a minute and then slowly drops to zero.
I checked the egr switch, and got slightly under 12V because the battery is a little low.
TL;DR
Code 32 after light driving. EGR valve wont hold vaccum, ordered a new Echlin EGR valve from NAPA. Anything else to check while I wait
After changing injectors, tps sensor, all distributor internals, thermostat, spark plugs and wires I took my "new" car for its first real drive. After about 10 minutes (2 miles) of extremely conservative driving in stop and go traffic I got a CEL. The car immediately struggled to stay alive so I turned around and drove it home. I surprisingly made it and just took my other car to work.
I had some time to work on the car today and the first step was to check the CEL and it yielded what I believe is code 32, three relatively quick pulses, a pause and then two back to back pulses and it then repeats and a code 12 is thrown in there.
http://tech.corvettecentral.com/2012...egr-diagnosis/
I followed and I got as far as applying a vacuum to the EGR valve with the key on, engine off , diagnositc grounded.
EGR valve will hold 20" of vacuum for about a minute and then slowly drops to zero.
I checked the egr switch, and got slightly under 12V because the battery is a little low.
TL;DR
Code 32 after light driving. EGR valve wont hold vaccum, ordered a new Echlin EGR valve from NAPA. Anything else to check while I wait
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
EGR solenoid. It's what applies the vacuum to the EGR valve. It needs a signal from the ECM to turn on. ...and the vacuum must get to where it needs to go.
My EGR solenoid failed. It wasn't opening the EGR valve and the EGR valve froze, which caused the error code 32.
Another note: I bought a new EGR valve from AutoZone. Before I put it in I tested it with a vacuum pump and it did NOT hold vacuum. My car now has an AC Delco EGR valve in it.
My EGR solenoid failed. It wasn't opening the EGR valve and the EGR valve froze, which caused the error code 32.
Another note: I bought a new EGR valve from AutoZone. Before I put it in I tested it with a vacuum pump and it did NOT hold vacuum. My car now has an AC Delco EGR valve in it.
Last edited by Cliff Harris; May 7, 2013 at 03:28 AM.
