Question about 1999 Jeep Cherokee

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Had a whining noise, replaced belt, still doing it, but only when ac is running. Doesn't do it with ac on at 40 mph or above, just low speeds. tensior pulley bad?

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Try spraying some wd40 on belt if it stops its the belt if not may be bearing or pully

Posted on Jul 29, 2009

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most likely a belt tensioner or pulley take some penetrating oil and spray the center of each pulley one at a time if the noise stops you got your bad pulley if not take the belts off the motor and spin everything by hand to feel or hear any grinding noises if you still don't feel anything run the motor (not for more then a minute) with the belts off and if the noise is still apparent your timing belt needs to be checked right away! it may be on its way out and if that goes your motor is toast good luck and please rate -jeff

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