Question about 2001 Toyota Corolla

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Runx a loud sqeaking noise while in motion. seems to be coming from the front of the car. it sqeaks faster as the car accellerate and slower as the car comes to a stop.

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  • Anonymous Mar 13, 2014

    when i start my Runx 160 rx , it starts with a mist but only for a minute or so and then the idol is back to normal ,

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Sounds like there are two possibilities.

A slipping belt that drives the alternator or the air conditioning can cause a horrible squeal. I am not sure if the Corrolla has a single belt or two belts. They drive the Water pump, the air conditioning and the Alternator off of the main crank shaft pulley. If so these belts can all be adjusted.

If there are two belts - one will drive the AC and the other will drive the Alternator. If its the Alternator belt that is slipping it should get worse if you tirn on the head lights and the rear window defroster as these draw power from the alternator and make the alternators job harder. If its the AC belt that is slipping then when you turn the AC on it should get worse. If you only have one belt then turning anything on should make the noise worse.

Typically to adjust the belt there is an adjuster nut on the Alternator assembly. You typically have to loosen the mounting bolts on the alternator slightly prior to stretching the belt and putting more tension on it and then re-tightening the bolts once the belt is tighter. Depending upon when the belts were last changed it may be time to replace them.

Getting to the bolts on the engine to do this work can be tricky and will be easier if you are familiar with the location of the components and the location of their mounting bolts. Really the best way to work this out and to get some idea is to go to a local car parts place like Autozone and buy a manual for the car (about $20) and this will be a huge help for this minor repair and many others. If these belts haven't been replaced in the last 30000 miles it would be a good idea to buy and fit new belts at the same time. New belts are about $30 foryour car although if the belts are not worn and cracking then re tensioning should be the best option initially.

The belts should be tight enough such that you can only twist the belt through a quarter of a turn on their longest running length.

The alternative that may be causing the squeeking though is worn breaks - where the pads have reached the wear limit warning and a metal spring is now rubbing on the surface of the Break disc. In that case you need to change the pads, but the symptom you describe sounds more like loose belt.

Hope that helps.

Posted on Aug 18, 2008

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Hi.those noises can be coused by several things ,have your belts removed and check one by one turning by hand your alternator ,water pump,power stering and air compresor ,if any of them is hard to turn there is your noise. good luck

Posted on Aug 17, 2008

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