usually, at the age of your car, the oxygen senser goes bad and requires replacement when the check engine light comes on. It means the computer has detected a problem and a code has been set. Have the computer scanned and that will determine what needs to be done. Don't replace anything until the scan.
it comes on when you need gas
The check engine light comes on at start up for a bulb check. If it stays on with the engine running the computer has detected a malfunction. You need to have it checked for codes.
Check your fluid levels.
If you're asking what to do when the check engine light comes on; take it to your local auto parts store (Autozone, Oreilly, Napa, etc.) and have them connect an ODBII reader to your car. This will give you a code that they can also decrypt and let you know what is going on with your car.
I recently porchased an 04 cavalier with the 2.2 ecotec engine. It gives me around 360 miles on a full tank but thats really pushing it
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle.
You can buy the check engine computer and the book comes with it. I know, I bought one. When your check engine light comes on, you plug it in and check the engine and it will give you the code and you look in the book for that code and it gives you the answer.
yes it comes stock
Have your a/c compressor checked by a mechanic.
It is on because the ECU has detected a problem with the emissions system.
The 2002 Chevy Cavalier has a sealed transmission. On the front of the transmission there is a 11mm bolt that sticks out from the side. Loosen it, if ATF comes out, it's full, if not, take that cap back off and add some more until it comes out of the check plug (it's very easy to miss! look carefully, driver side, 11mm bolt protruding from side)
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions. If the check engine light is flashing a misfire has been detected