Service engine light issue.. advice?
Thread Starter
Instructor
Joined: Mar 2012
Posts: 170
Likes: 1
Service engine light issue.. advice?
Took a ride today about 45 minutes long, service engine light comes on about 30 minutes through the ride... pull along the side of the road check for any loose wires, connections, ect, anything unusual... nothing.. got home let the car sit for 20 minutes, came out and started it and no service engine light. this has happened twice, any thoughts? id like to track this down before it becomes an issue! car is a 95 w/ 143k miles
Racer
Joined: Jan 2012
Posts: 440
Likes: 2
From: Springfield Ohio
You know I have a similar issue with mine. Where I drive it in normal conditions and the light randomly comes on with no overheating or any other temps out of wack. I'm curious as well to see what the case might be. Mine comes on somewhat often and has me thinking there must be a short because not once has anything been even remotely out of order. I hope we can both get some ideas and advice.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
This is the classic symptom of an EGR system that is not working (error code 32). See here to read the ECM/PCM error codes:
http://corvettephotographs.com/c4vettes/codes.htm
The error codes are listed here:
http://forums.corvetteforum.com/1576116036-post35.html
http://corvettephotographs.com/c4vettes/codes.htm
The error codes are listed here:
http://forums.corvetteforum.com/1576116036-post35.html
Le Mans Master
Joined: Feb 2000
Posts: 9,060
Likes: 214
From: Epping NH
Thread Starter
Instructor
Joined: Mar 2012
Posts: 170
Likes: 1
just a follow up for you guys, checked hoses and snugged them up, so far the light has not come back on....
i do plan on buying that device to read codes in the near future but for now i'm going to wait and see if it will come back on or not.... good luck to you few that posted with the same problem, as 1990torchred said check the hoses!!
i do plan on buying that device to read codes in the near future but for now i'm going to wait and see if it will come back on or not.... good luck to you few that posted with the same problem, as 1990torchred said check the hoses!!
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Le Mans Master
Joined: Jan 2006
Posts: 5,621
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From: Orlando FL
Pull the codes and see what it indicates. I say this because I had almost the same symptom but my problem was the Evaporative Emission Canister Purge Solenoid Valve.
Both the EGR and canister can cause similar symptoms and by getting the code might take some of the guess work out of it. You will at least know what circuit or system to work on.
Both the EGR and canister can cause similar symptoms and by getting the code might take some of the guess work out of it. You will at least know what circuit or system to work on.
Thread Starter
Instructor
Joined: Mar 2012
Posts: 170
Likes: 1
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
So go back and run it again and see if any codes come up. Always note what codes there are for the indicated module.
If there are no codes in module 1, it will say C12 which is a normal indication.