Question about 1997 Lexus LX 450

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Squeaking noise front drivers side of engine

I took the truck in for a oil change, dealer suggested to replace belts to get rid of squeak, did not help. They replaced belt pully, did not help. They suggested to replace alternator...I took it into a local shop that rebuilds alternator, they put in new bearings and brushes, but they said they weren't bad, but since they had it apart they changed them.

Any suggestions?

Thanking you in advance.

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  • ronok26 Mar 17, 2009

    I do have the same condition on my 1997..I sprayed belts with a belt dressing but the noise got worse and now it sounds like noise is from the alternator, don't know, not quite sure.There is a slight visible wobble on each of the pulleys but I don't know where to start fixing the problem. Please help. Thank you..

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Loosen the belts [ you do not need to remove] so they are free of tension to all pulleys.Start engine , if noise goes away either belts were too loose [ common on lx 450] or you have a worn & noisey pulley /bearing.have seen idler pulley below alternator have dry / noisey bearing.Otherwise if idler is ok it has to be another belt driven assessory , ac clutch,water pump & or fan clutch.Good Luck.

Posted on Feb 04, 2009

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