Question about 1999 Jeep Wrangler

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When very cold makes whining sound from front of engine down low

Sound only happens when it's below 30 degrees some have suggested it sounds like bearings possibly in water pump

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  • Just Jeeps
    Just Jeeps May 11, 2010

    how many miles on the motor have you ever changed water pump it will make a grinding sound if bad and should leak slightly also. you can loosen belt and see if pulley on waterpump is loose or wiggles alot if so the pump is bad

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Check your fan clutch. The Hanes manual says that if the motor is cold, you should only be able to rotate the fan about 3 turns in either direction and it should have resistance to the touch. Mine went bad at 96k. It took me a while to track it down (fan clutch, what the hell is that?). Took about 20 minutes to replace in my driveway with basic tools. Cost about $60.00 for parts. No more squeal.

Posted on Mar 12, 2009

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For step by step troubleshooting this problem, I suggest you to refer the help links mentioned below. Its a complete solution with proper explanation to identify the cause of problem: ------


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