Question about 1995 Buick Park Avenue

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95 Park Avenue Tach is sporatic and engine seems like misfire but recovers. Only does it when it feels like it and is not constant. Doesn't matter if at idle or driving down the road. All of a sudden starts bucking and jerking. Replaced ICM, coil packs, plugs, cam sensor and still having problems. Check engine does not lite when symptomatic.

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I don't know what ICM stands for but I was having exactly the same problem with my '95 Park Avenue and it turned out to be the main computer brain (the plain metal box tucked up under the dash on the passenger side). Sounds like you might very well be having the same issue.

Posted on May 22, 2010

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Have the ignition module and coils checked out

Posted on Apr 30, 2010

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Could be a coil breaking down , you did replace them did you ? Take a spray bottle of water an spray the coils , mite find cause of the misfire . Also look at coils for a discoloration , a rainbow affect . Or you can power brake the vehicle an take a test light an put neg . clamp end on battery neg . an then move the point end around the coils .

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3 Answers

Car Misses after replacing the coils and spark plugs


Has the service engine light come on? If so, have the codes pulled and it will narrow down the cylinder that is causing the problem.
If no service engine light, have you narrowed it down to one cylinder or is it random.
Let me know and we will go from there.
Regards,

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