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2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-03-2009, 12:48 PM   #11
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Quote:
Originally Posted by Purplehazeir View Post
Chris....I'm thinking now that motor and transmission mounts need to really be looked at and make sure that the engine cradle bolts are tight and torqued down.
Dear Purplehazaer,

I think you are on the right track here. I will bring to the local mechanic and see what he comes up with. I also tried to change the oil and couldn't get the oil plug loose. Does thia have a reversed thread? Thanks!

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Old 12-03-2009, 03:39 PM   #12
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This may not be relevant, but a guy I work with had a dodge grand caravan that similar symptoms, but felt through the floor. It was aggravated by turning, especially to the right. He had a mechanic troubleshoot and said all kinds of possibilities. I drove it the next day and noticed it occurred in neutral rolling through a corner, but disappeared as I varied the RPMs. Bottom line: a quick google search turned up a TSB that required replacing the power steering hose from the pump to the rack. $80 and fine now.

I doubt this applies to bonnevilles, but I never would have guessed a power steering hose could make that much racket.
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Old 12-03-2009, 03:45 PM   #13
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The oil plug is a standard thread.

Check over the front drivers side trans mount. It'* a bit hard to see under the exhaust manifold. If that'* loose it will shudder real bad.
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Old 12-15-2009, 09:40 AM   #14
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Dear Dan,

Thanks for the info, I had that motor mount replaced and it was alittle better. I think the passenger side front motor mount will be the next one I replace. Thanks for the info on the oil plug I had tire chain change the oil the last time and they torqued it on with an air wrench. Finally, I don't know if you need parts for your car but Rockauto.com is giving a 5% discount isf you use the code 25779232102187. This code is good until 2/7/2010.

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