1988 Camaro 305 700R4 with 63,100 miles. I get an intermittent 'Service Engine Soon' light with no rime or reason when it comes on. Code 32, EGR Valve. I can drive the car a short distant and it will come on for a short while and then go off. Other times I can drive it for a couple of days before it comes on. And then other times it comes on and won't go off until I shut the engine off. I removed the EGR Valve which seems to be ok in that the valve seems to move freely, no built up. I put it back on. Put a vacuum gauge on the solenoid. Started the engine with no vacuum at idle from the solenoid.

Wanted to see if anyone had a good idea what is going on before I started throwing money at it.

Thanks in advance.

 

Over 40 views and not one person with a thought on the matter?

 

With the engine off did the EGR valve hold vacuum. What are the conditions of the vacuum hoses attached to the solenoid and valve? I replaced my valve when it wouldn't hold vacuum and I replaced my vacuum hoses too. This seemed to cure my CEL until recently I've experiencing what you are. My leaking oil pan is taking precedence. Good luck.

 

I've checked everything. I purchased a EGR Valve yesterday. I'll install it in a day or two. Will post back after a week or so and report if it was the problem.

 

replace the solenoid as well. you can do a leak down test first if you have a mightyvac or some other similar hand operated vac pump.

 

FWIW, my '88 Camaro only has 63,100 miles. So, I'll try the EGR Valve first. If that doesn't do it I'll get the solenoid. Both are easy to get to.

 

By your logic the EGR should be fine as well... A hand held vac tester and 15 minutes of time you could determine what component is no good. For all you know it could be $1 worth of vac hose. But you might as well start with the most expensive thing first because nothing would break on a 27 year old car with 60k miles on it.

 

I had the same issue with my car had around the same mileage at the time. The aftermarket one I purchased had different size washers to put in the bottom of the egr valve. Took several tries to get the correct one and it not throw a code. After all that a couple months went by and my intake gaskets started leaking. Took the intake off to replace the gaskets. Then I found the port for the egr was nearly closed off by carbon build up. It hasn't thrown a code since and it has been several years. That may be something to consider as well if the new valve doesn't fix your issue.

 

Geez, settle down, dude. I checked the hoses, used break cleaner too. You said for me to get both EGR Valve and Solenoid while I'm at it. Well, I'm going to try one at a time, not both at once. How would I know which one was bad if I changed both at the same time. I only mentioned the age and mileage of my Camaro just for factual data, nothing else. Heck, things can go bad on a new car. Good grief, don't know if I want to stay a member with responses like yours.

 

Replaced the EGR Valve about 2 weeks ago and no 'Service Engine Soon' light, since. Evidently that was the problem. End of that story.

 

The Service Engine Soon light never has come on since I installed a new one from NAPA. It's been weeks now. Just saying.

 

Great! Wish they were all that easy.