Questions & Answers for: Buick shaking engine at 40 mph

Question about 1994 Roadmaster

2 Answers

...with your engine. I had the same problem before and it was because I had a bad spark plug. At a high RPM it was not as noticeable but idling it was shaking a lot as well. ...

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Question about 1994 Roadmaster

1 Answer

...shaking (not chugging). Either slow down below 40 or hold above 50. No problems coasting or braking. Doesn't matter what gear car is in. Bearings are good. Doesn't shake at any other speed or ...

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...shaking (not chugging). Either slow down below 40 or hold above 50. No problems coasting or braking. Doesn't matter what gear car is in. Bearings are good, rotated tires. Doesn't shake at any other ...

...engine mount, but I replaced the two as described and shaking is gone. Hey Eddie..my name is Keith....and usually a bad vibration between 30 and 55 MPH indicates that one of your tires is out of ...

...Lesabre shakes at 40 mph what do I do? Check front engine mounts. Open hood, hold brake pedal down, put car in drive, press gas pedal down a little and see if engine jumps up due to a broken

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