2001 Chevy Monte Carlo Idle problems

2001 CHEVROLET MONTE CARLO
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JREL1486
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Noises problem
2001 Chevy Monte Carlo Automatic 160000 miles

When my car is in idle it begins to first studder then it makes a loud clicking sound like the engine wants to lock up. It does not do this everytime im in idle but only some. I can either be in park or jus be stopped at a light and once i resume acceleration for a while the noise stops. please let me know of any input...thank you
Jul 15, 2009 at 11:42 AM
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JACOBANDNICKOLAS
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Has the check engine light come on? Does the sound come from the engine or under the car? If the engine is running rough (studdering) it could be a heat shield or exhaust hitting.

Let me know.
Jul 18, 2009 at 4:13 PM