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Auto Transmission noise at startup

 
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Old 04 Oct 2010, 08:41 am
onemat's Avatar
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Default Auto Transmission noise at startup

Hi All,

My PT is a 2008 with an Automatic.
Beginning last week, the morning temps have dropped to the thrities and I've got a noticiable noise coming from under the car at startup. It sounds like a metalic moan, and it sounds like it moves from right to left, like it's associated with something turning, mostl ikely in the AT. As soon as you begin to roll the noise disapears. Shifting seems normal. It's got me worried. Fluid level is normal and the fluid looks good. Anybody got ideas and advice? It will be very much appreciated.
Matt
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Old 04 Oct 2010, 09:49 pm
mdfrodolives's Avatar
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Default Re: Auto Transmission noise at startup

Put your car in neutral and rev up the engine a little to see if the noise changes--or disappears. Do NOT engage any gear when doing this. If the noise changes, I'd suspect something to do with the engine--perhaps a serpentine belt adjuster bearing--or any number of engine maladies.

But first, try to pinpoint if the transmission is really the culprit by disengaging it from the engine by using the trick above. Of course the trans is doing something--even during this test--but not a whole lot.

Hopefully, it's an engine problem that's not too deep.

Tim
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Old 05 Oct 2010, 08:24 am
quicksilverdon's Avatar
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Default Re: Auto Transmission noise at startup

^^^^ Agree.
And , try turning the steering wheel - power steering pump is a regular culprit for noise.
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Old 05 Oct 2010, 09:50 am
onemat's Avatar
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Default Re: Auto Transmission noise at startup

Thanks guys for all the help and suggestons. OK, this morning I put it in neutal before cranking. The noise and slight vibration was still there and it feels like it's direcly under the car. I kow that what we hear and feel can be a bit mis-leading so I really have know clue. I guess I have to decide whether I'm going to the dealer or a transmission place.
Matt
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