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I have a 95 olds cutlass supreme, 3100 engine with 150k miles on it.
This weekend was driving around perfectly, has always ran great. Stopped to eat, was inside for about an hour. Came back out and now car runs with a terrible shake. Its comming from the engine, it does it in park, neutral and while driving. It gets really bad when I accelerate, and goes away completely when I coast at higher speeds.
The engine itself seems to be running fine. It starts ok, and I haven't really noticed a loss of power or change of normal engine noises.
I'm going to replace the serp belt tonight and drop the oil to look for leaks of any sorts, but can anyone toss me some advice as to what the problem might be?
Thanks!
Paul
PS - Long time reader, first time poster. Sad that my first post has to be about a problem with my baby!
This weekend was driving around perfectly, has always ran great. Stopped to eat, was inside for about an hour. Came back out and now car runs with a terrible shake. Its comming from the engine, it does it in park, neutral and while driving. It gets really bad when I accelerate, and goes away completely when I coast at higher speeds.
The engine itself seems to be running fine. It starts ok, and I haven't really noticed a loss of power or change of normal engine noises.
I'm going to replace the serp belt tonight and drop the oil to look for leaks of any sorts, but can anyone toss me some advice as to what the problem might be?
Thanks!
Paul
PS - Long time reader, first time poster. Sad that my first post has to be about a problem with my baby!
after that i checked the switches on my ignition everything fine. So put my old GM coil packs back in and started it up and everything was perfect again. Kinda a piss off cuz the MSD coils packs are only about 1 1/2 months old 
. This morning i tested each coil and found the bad one.
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