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1991 Buick Regal Question: Why does my car run Rough?



Visitor, Santa Maria, CA, May 22, 2010, 03:04

I replaced two coil packs, it ran ok. One day I was driving and the car shut off. i tried to start it then it back fired. It started up after 5 mins or so. It drove home fine. I was driving it the next morning it was running rough. I thought it was the other coil pack that needed replacement. I did that, but it was the same. I replaced the wires, still the same thing. What do I do now?

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  • Answer #1

    Visitor, August 25, 2010, 14:20

    try the lamba sensors

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    Visitor, November 18, 2010, 11:27

    It may be one of your fuses try the e.c.u. fuse and make sure it is still a good fuse and if it not that then check all of your sensors some times they come loose or crack.

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