C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Code 32 -- EGR? and SES light

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Old Aug 29, 2008 | 02:27 PM
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Default Code 32 -- EGR? and SES light

That's what the book says a code 32 is -- '91 L98 auto -- would replacing the EGR and/or O2 sensor fix this?

The SES light comes on after about 20 minutes or so of (only) highway driving...

I'm going to be replacing the injectors soon anyway so replacing the EGR at that time should be a minor part of that big job...no?

Thanks all!
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Old Aug 29, 2008 | 02:38 PM
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Why would it have anything to do with the O2 sensor? Different circuit entirely.

First thing to do is go here
http://members.shaw.ca/corvette86/Code%2032.pdf

And troubleshoot the problem before you go replacing things.
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Old Aug 29, 2008 | 05:09 PM
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My "91" had the SES light come on about the same time as yours and had a code 32.

I checked for vacuum leaks and checked the EGR solenoid but, the SES light continued to come on every night on the way home from work. The engine ran fine.

I decided to install a new AC Delco EGR valve since the original had 80,000 miles on it and the SES never came on again. I cleared the code 32 and it never returned.

Last edited by GKK; Aug 29, 2008 at 05:12 PM.
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