2002 Chevrolet Monte Carlo Q&A
2002 Chevrolet Monte Carlo Question: check engine light on
You will have to hook up a scanner to pull the diagnostic code and diagnose the problem. In most cases it's not due to the oil change or related to maintenance. The check engine light is telling you that there is something wrong with the emissions system on your vehicle. - rdude135
The check engine light will, yes, tell you about any emissions problems, but also, in my case, will come on if the sensors think your coolant is too cold for sustained motor operation. try to hook it up, get some codes, and see what they mean. - Leuschen86
my 02 had a check engine light on once...and i really didnt know what was wrong at the time...computer code read cylinder mis-fire. tune-up took care of it...get your car scanned. - Visitor
I have a 2003 Monte 3.8 V6. Engine light kept coming on after resetting it due to a bad evap solenoid in the emmissions system. Easy fix. - Visitor
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
My check enigine light came on about a year ago.It wouldn't go off, causing a failed emissions test.They also failed my gas cap which I've replaced twice and still failed. Now I took it back to emi...
...bsp;to the intake manifold may develop an engine vacuum leak, causing the Check Engine Light to illuminate with code P0171 and/or P0174 stored.
Problem began about 7 weeks ago. Car would crank, but not start. Towed it to dealer, where they said the fuel pump was bad. Replaced the fuel pump. Brought it home on Wednesday, tried to start it f...