Buick Repair Questions? Ask a Mechanic for Answers ASAP
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This most likely means you have a failing ignition coil causing the msifire which will also turn on stability control message. You need to start by having diagnostic codes checked which can be done at your local parts store for free. It should indicate specifically what cylinder is misfiring, then swap that coil with another cylinder and reset codes. If misfire follows coil that you swapped around then this verifies coil is the problem and that it needs to be replaced. Let me know if you have more questions, thanks.
Then it is most likely the cylinder 2 coil, swap that with another cylinder to see if it follows coil. If so, then replace. Let me know if you have more questions, thanks.
You will need to keep driving until it throws a cylinder specific code or just buy a new coil and hope for the best, I'm pretty confident coil is the problem. Let me know how it goes or if you have more questions, thanks.
It can but not usually. Usually the converter clogged up will allow vehicle to still idle fine but when trying to accelerate it will max out at around 3500 rpm. Any time engine light flashes it almost always means ignition related problem. Let me know if you have questions, thanks.
That's what I'd do, coils are fairly cheap. Let me know how it goes or if you have more questions. Thanks.