Door Locking Problems, SCREEEEEEEECCCHHH

rnoswal · 11-03-2005, 02:54 PM

Ok, when you look at the engine from the front, you can see the fan. It is a big plastic thing with blades on it. There is a grooved belt that drives it and the alternator, which is that big silver looking thing on the upper right side of the engine. Below that is another silverlooking thing call the air conditioner pump. It has the same type belt that runs over a tensioner and to the crank pulley. On the left lower side front, is the power steering pump. It has the same type belt and gets its adjustment by loosening the bolt at the top of the pump and prying the top part of the pump away from the engine until the belt is correctly tightened. All three belts get there power from the center crank shaft pulley. It has three belts going around it.

You have to check the belts by looking at them and try to see if there are any cracks on the ribbed side. If so, replace it or all three. The alternator belt is usually the one that does the screeching because while just sitting there running that is the only belt that has resistance applied to it because of the alternator being used to charge the battery and any other electrical device you might have. If you have a mega music system that will cause a draw on the alt too. Anyway, revving it up and hearing the noise is from that. You have to loosen the bolt on the alternator and then use a 10 mm wrench to move the nut up on the adjuster bracket under the front of the alternator. Don't overdo it though, just tighten it until it stops screeching then tighten the nuts and bolts back up.

Good luck and let us know.

Russ

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11-03-2005, 02:54 PM	#1
rnoswal Lexus & 550's Join Date: Apr 2005 Location: Bossier City LA Posts: 556	Ok, when you look at the engine from the front, you can see the fan. It is a big plastic thing with blades on it. There is a grooved belt that drives it and the alternator, which is that big silver looking thing on the upper right side of the engine. Below that is another silverlooking thing call the air conditioner pump. It has the same type belt that runs over a tensioner and to the crank pulley. On the left lower side front, is the power steering pump. It has the same type belt and gets its adjustment by loosening the bolt at the top of the pump and prying the top part of the pump away from the engine until the belt is correctly tightened. All three belts get there power from the center crank shaft pulley. It has three belts going around it. You have to check the belts by looking at them and try to see if there are any cracks on the ribbed side. If so, replace it or all three. The alternator belt is usually the one that does the screeching because while just sitting there running that is the only belt that has resistance applied to it because of the alternator being used to charge the battery and any other electrical device you might have. If you have a mega music system that will cause a draw on the alt too. Anyway, revving it up and hearing the noise is from that. You have to loosen the bolt on the alternator and then use a 10 mm wrench to move the nut up on the adjuster bracket under the front of the alternator. Don't overdo it though, just tighten it until it stops screeching then tighten the nuts and bolts back up. Good luck and let us know. Russ