Question about 1997 Buick Century

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Buick century misfire

I have a misfire when my starts to warm up. What I mean is I dont have a misfire at first, but when my engine temp starts to rise it will have a miss until it reaches a certain temp. I have replced coolant temp sensor and air intake temp sensor. Could it be my thermostant. I have replaced crank sensors,ecm, alternator, plugs,wires,coils ign mod, Its driving me nuts

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It could be thermosat...i would also check EGR valve the are common to stick out and cause misfires

Posted on Dec 17, 2008

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