Question about 2000 Cadillac DeVille

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2000 cadilac deville. car runs fine, but when the Air is turned on is feels like it is misfiring and the engine light flashes, does this only when the air is on

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Sir if the check engine ligh is flashing that indicates a PO300 code which is a missfire code. To determine which cylinder you will need a scanner to find out. The problem could be a failed sparkplug, a failed ignition module for that bank, a failed injector. At any rate it will require trouble shooting to diagnosis. Wish I could help more. Thank you

Posted on Sep 03, 2010

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Posted on Jan 02, 2017

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