Mechanics

CHEVY CODE 32

1995 Chevrolet Truck

Engine Performance problem
1995 Chevy Truck V8 Two Wheel Drive Automatic 100, 00 miles

I have a chev 454 one ton pick up/code 32. I have replaced, Map sensor/air control device/New EGR valve /TPS/Temperature Sensor. EGR valve is Linear type. Code 32 still resets even when I unplug electric plug. Code is off when truck sits overnight as soon as I drive it code comes back on and truck will sometimes pop through engine. Sometimes truck will run ok for 8 to ten miles. Would appreciate any help Thanks James
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Jjmsmootie
July 22, 2008.



What is the code number in the POxxx format?

Are there any other symptoms beside the MIL being on?

I'm Sorry, I just looked at the posting, and somehow the wrong year got on the post. It is a 1995 Chevy one ton pickup, 454. This truck has a service engine light and sets code 32. I have made a donation already, but if I can fix this problem, I will make an additional donation.

Many Thanks,
James

Tiny
Jjmsmootie
Jul 23, 2008.
The egr solenoid may only be staying open a shaort time and then close. Put vacuum to it and see. If you can manually apply vacuum and open the valve then either the solenoid is not working or not enough vacuum supply. MAke sure the hoses on it haveeen't been reversed.

[quote=" Service Writer" ]The egr solenoid may only be staying open a shaort time and then close. Put vacuum to it and see. If you can manually apply vacuum and open the valve then either the solenoid is not working or not enough vacuum supply. MAke thesure hoses on it haveeen't been reversed.[/ This truck has all electric egr valve no vacuum. Thanks james

Tiny
Jjmsmootie
Jul 23, 2008.
Sorry.

When the egr valve was off, were the ports cleaned of the carbon and verified clear?

I double checked ports today all clear I also replaced main computer.I still get code 32 after warm up.

Tiny
Jjmsmootie
Jul 24, 2008.
I talked to another tech yesterday and brought yours up. He mentioned that had a couple similiar that ended up haveing to replace the EGR he had already replaced with a a/c Delco one. Sometimes OEM parts resolve it. Don't know why exactly. What brand did you use? Might be worth returning and re-purchasing.

One other thought, Check to make sure that the reluctor on the distributer shaft isn't cracked (sometimes tough to see). If it is, the reluctor will move on the shaft throwing your timing out,
which in turn changes the apply time of the EGR

I just have to make up my mind which to do first can't take back egr valve so I will have to have it tested. They are pretty expensive. There is small miss around 1500 RPMS smoothes out after that. If the EGR test OK then I'll go to distributer. Thanks I'll keep you posted

Tiny
Jjmsmootie
Jul 29, 2008.