Question about 1994 Buick Park Avenue

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Engine shakes when accelerates, lost power, Buick Park Avenue

Hi !
I have Buick Park Avenue high mileage (1995). The engine starts to shake today, while I was driving. Last time it occured, I changed the sparkle plugs and it was okay ! Did it today, but it changed nothing. Seems that I have a problem with injection, or something like that, no? Motor doesn't heat, no smell, everything looks okay. Tried to change the fuel filter, but didn't find it. May it cause this kind of issue?
Thanks to help me. Would like to know if I can still drive.

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  • captain_vdl Nov 21, 2008

    Good diagnosis.

    I had to go to the garagist and that what he changed.

    Cost me 400 box, but I think he overcharged the work, didn't he?



    Txs anyway

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Look for a bad coil pack. If you have the bank of three coils on the front passenger side of the motor, it is possible that one of them is going bad. This can be an intermittent problem since it failure is frequently heat related, and may not show up until the car is all heated up. It is simple enough to change one of these if you can figure out which one it is. There is a little device ( Spark detector) that can sense the sparks inside the wires. Get one and hold it close to each wire... away from the coils. The wire, that does not make the spark detector light up...is coming from the bad coil. (It is also possible that a spark plug wire is bad instead.) Good luck. Chip

Posted on Nov 21, 2008

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