Causes for the check engine light to come on in a 1981 Chevy Corvette include overheating, low oil pressure, and a bad alternator. Because this car is not equipped with a computer, it has limited self diagnostic abilities.
Emission Components - usually
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There are dozens and dozens of causes for the check engine light to stay on. You need to have the computer checked for codes to know possible causes.
The engine is overheating. The check engine light is not on because you have no problem with the emissions system which this light monitors.
Check your gas cap.....My check Engine light always comes on if it is loose or not on at all.
Your bad muffler might be part of the reason your check engine light comes on. Usually, your bad muffler causes something else to go wrong and that causes your check engine light to come on. Problems cascade.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
I don't have an answer for you except that you can go to Autozone and they will check your computer for free if your check engine light is on. I don't know what year model this starts at, but it's worth a try so that you don't have to guess!
The check engine light on a 2003 Honda Accord will be triggered when something on the engine is malfunctioning. To rid the check engine a light the ECU will need to be reset.
The Check Engine Light (CEL) lights up when the Engine Control Module (ECM) detects a problem related to emissions or performance.
There are pages and pages of causes for a check engine light. You need to have it checked for codes with a scanner to know what to diagnose. After the repair you can clear the code with a scanner.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
The Check Engine light comes on when the ECU detects a problem with the emissions system. Seek professional help.