Question about 2003 Chevrolet Impala
Go to an Autozone, Checker, Shucks, Kragen, O'Reilly, or a NAPA auto parts store and ask them to use their code reader to find out what the trouble codes are causing your check engine light to come on. They will do this for no charge. Report back here once you know what the codes are.
Posted on Apr 07, 2010
Get the code, My Expedition did this exact thing yesterday. My code reader said #8 misfire. Replaced coil on the cylinder. Swapped coils and plugs with other cylinders. The misfire followed the coil. If the misfire stayed on the same cylinder then most likely you have a injector issue or intake vacuum leak. I fix cars for a living at his is a backyard mechanic diagnoses without needing any special tools
Posted on Nov 19, 2009
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Posted on Jan 02, 2017
First you need to have it scanned for fault codes. Thats what causes the check engine light to illuminate. Without these codes any diagnoses is speculation. You can have the system scanned at most any auto parts store for free. Auto zone, checkers, Napa, and Murray's will do this for you. Bring the codes back here and we will have a better understanding of whats causing this.
Posted on Jun 13, 2010
SOURCE: ABS and Check Engine Lights on
This could be the case, Car computers don't like being started other than how it was suppose to be started, You will need an error code reader just to confirm there are no problems with the engine then you can clear any stored error codes which will turn off any lights you have on.
Posted on Jul 21, 2010
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