Question about 2001 Cadillac DeVille

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2001 Cadillac Deville; noise after the engine starts

As soon as the engine has started it takes a minute for the rpms to come down. Just recently it has began to make a high pitched wineing sound during this period. The noise goes away as soon as the engine has dropped to around 700-900 rpms, and does not return. Any idea's?

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  • Anonymous Jan 24, 2009

    my 2002 deville makes a loud whining noise when it's first started after about 20-30 seconds it stops and doesn't do it again until you shut it off and start the engine again...this all started after the water pump was replaced.

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The whine sounds like the power steering or the alternator, as far as the idle issue goes try this clean the intake throttle body and idle speed control valve with carb spray, disconnect battery for 5 min. then reconnect and drive a few miles to reset idle strategy. The car will try to die when you spray the intake, hold the idle up to prevent that, use at least 1/2 the can of carb spray.

Posted on Aug 04, 2008

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Posted on Jan 02, 2017

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HOW CAN YOU TELL IF YOU HAVE A BAD WATER PUMP IN 2001 DEVILLE


Hi there
A bad or worn water pump ,you will either boil the engine water system or loose water or coolant while driving and when you stopped or water [temp] light will come on when it gets down in the header tank,AND
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Let me know how you go.

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