Question about 2002 Nissan Pathfinder

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Squeaking belt ?

Hello, My daughter has a 2002 Nissan Pathfinder and apparently by changing out both belts it didn't correct the squeaking problem. She called me this AM and said they sqeaked all the way to school, approx. 5 miles. Any help in this issue would be greatly appreciated, Thanks. Kerry

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Hello there, are you sure the belts are the one's squeeking? there are other parts that might produce the same squeeking sound namely: damaged alternator bearing, damaged waterpump bearing/bushing, damaged aircon bearing and damaged idler pulley bearing. try to determine which one by grabing a fairly long water hose, approximately about a meter long just so you could manuever it on the squeeking area during the enging running on idle to isolate the problem. much like a sthethoscope used by doctors. the stronger the sound on that particular area could pin point your problem. just watch out for the fanblades and fanbelt pulleys.

Posted on Apr 17, 2009

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If changing the belts didn't stop the problem, it may be a pulley that is making the squeak, not the belts. When belts age, they tend to form a glaze on the contact surface, which can cause slippage, or squeak, or squeal, also if engine fluids get on the belt due to leaks or spillage, it can cause a problem. If you feel it's definitely the belt(s) making the noise, check the belt tensioner for wear. There is usually an indicator (stamped on the tensioner) that shows if it is in need of replacement. If that's the case, it would not keep the belt(s) tight, and could cause them to slip and squeal. Let me know what you find, or if you have further questions. Curt

Posted on Apr 17, 2009

  • Curt Downs Apr 17, 2009

    I checked further, and apparently this vehicle doesn't have a tensioner, so I would assume it must be adjusted at the component locations (alternator, a/c pump, ps pump, etc). If a garage put the belts on, bring it back and have them check the belts for proper adjustment (tension). If they aren't tight enough, they will squeal. If you, or a friend put the belts on, tighten them up and the squeal should stop.


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