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What could be the reason why my check engine light is on?
on 1998 Buick Skylark

Check engine light is on.

Asked by for the 1998 Buick Skylark
Agree with reply to #2
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3 more answers , 3 more comments
There could be a 100 reasons; If it is still running good it could be just an EVAP code. Get it scanned and post the codes and we can help.
Hi, in my car(1999 chevy malibu,4 cylinder) check engine light is on, and it is shaking when car is started & drive with lower than 20Mph. when i shown to some of known mechanics they said problem in coil set & i must reply the hole set because in my car the total 4 coil in one set. Can you please help to solve the problem it's great help to me.
Thanks in advance
regards
Vijay
5103632852
If you have a spark tester or insulated pliers you could verify spark at each tower. The wires could also be tested. The easiest thing would to take it to a parts store and see if it is a misfire code. Don't change any parts until it has been verified as to what the cause of the fault.
agree with # 1
Agree with #2
Did you scan for an OBD code from the main computer?