Code 32 on my 88
Thread Starter
Instructor
Joined: Nov 2008
Posts: 169
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From: Harrisonburg VA
Code 32 on my 88
My SES light is coming on and I am getting a code 32 which is a faulty EGR circuit. It only happens when I have been on the interstate for about 15 minutes or so. The car seems to run fine. When I shut it down and restart the SES light goes off until I am back on the interstate again for 15 minutes or so. I have a service manual but the diagnostics require a scanner. Any ideas of how to find my issue?
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My SES light is coming on and I am getting a code 32 which is a faulty EGR circuit. It only happens when I have been on the interstate for about 15 minutes or so. The car seems to run fine. When I shut it down and restart the SES light goes off until I am back on the interstate again for 15 minutes or so. I have a service manual but the diagnostics require a scanner. Any ideas of how to find my issue?
Thread Starter
Instructor
Joined: Nov 2008
Posts: 169
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From: Harrisonburg VA
Thanks Pete. After some reading here I'm thinking that may be my issue. I will test it first. I found this great post that explains the system and how to test the components. Much easier to understand than the FSM.
http://forums.corvetteforum.com/c4-t...de-32-fix.html
http://forums.corvetteforum.com/c4-t...de-32-fix.html
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Mine ended up being the EGR valve. The diaphragm on the valve rotted away, resulting in a vacuum leak. I replaced it with a new one, cleared the ECM codes and voila! No more Code 32.
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And the proper way to figure out which of the above caused it is to put a vacuum on the EGR and see if it holds or not.I use a Mighty Vac. If it does then buy the switch.
Hey Joe have you been to my Bro-in-laws place in Harrisonburg Dave's Taverna?
Hey Joe have you been to my Bro-in-laws place in Harrisonburg Dave's Taverna?
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Although mine was visibly deteriorated even before I completely removed it and applied vacuum via the Mighty Vac tool, so it was patently obvious mine had gone ****-up some time ago.
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Instructor
Joined: Nov 2008
Posts: 169
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From: Harrisonburg VA
I hope to work some more on the EGR issue this weekend and I will try all your suggestions. I've been out of town and very busy with work so I haven't had a chance to work on it. I will keep you posted on what I find. How hard is it to replace the EGR valve? It looks like it could be a big job at first glance.
Last edited by avgjoe; Dec 30, 2008 at 08:21 AM. Reason: wanted to ad something
