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Old 05-12-2011, 01:26 PM
jml755 jml755 is offline
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Re: Car shaking and making knocking sounds when accelerating

If you're not showing any codes, could be a bearing or CV joint. I had just replaced a R/F wheel bearing and the rack-and-pinion on my '01 GTP in the last couple of weeks. Daughter told me last nite that the car was "shaking again". It had a very,very mild vibration after the mentioned work, so I took a test drive last nite and wow, the "minor vibration" is now a pretty severe shaking especially during acceleration. Also a "ticking noise". I threw it in neutral and revved the engine. Engine sounded and felt pretty smooth, no severe shudder while coasting in neutral either. Figure that means drivetrain. Especially since I'm not lighting up the service engine indicator with codes. I had replaced the L/F wheel bearing a year ago, then remembered this: The CV joint boot clamp had come loose on the Left side at some point and was just sitting around the spinning shaft. I had noticed it when I did the R & P last weekend and thought I had pushed it back on. May have come loose again and this may be the "ticking" sound. And if it's been off for some time, I imagine that the CV may be damaged. Kind of makes sense and the only think else in the drivetrain would be transmission so I'm going to replace the CV joint this weekend as it's the cheapest first step ($70). Symptoms seem more pronounced when turning right which also indicates problems on the left side as that's where the forces get exerted in a r/h turn.
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