Plymouth Laser

How do you stop an alternator belt from squealing on a 1993 Plymouth Laser 20 L non-turbo when you have already replaced the alternator and belt several times and checked the tension on the belt?


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2015-07-16 19:32:18
2015-07-16 19:32:18

Try tightening the mounting bolt on the idler and/or tensioning pullies. This did the trick for a persistent squeek on my 93' Jeep Wrangler.

On some cars, the idler pulley {usually on the belt tensioner) can squeal. If you squirt some WD-40 or similar lubricant on the front of the bearing (engine off), and the noise goes away, it is probably the bearings in the idler pulley. If this is the case, replace the idler pulley, because the noise will come back after the lubricant gets slung out of the bearing.

I also have a Plymouth laser, I had the same problem and tryed the same things. If the above answers don't seem to work, look at the water pump. In the water pump there are ball bearings the keep it spinning smoothly and when the casing of the bearings give way, the bearings no longer glide over the surface, instead they bunch up and rub against the back of the pulley. If this is the case, you will be able to see the bearings behind the pulley.


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I actually was suprised my grand prix was squealing and it was the alternator. I got it replaced and it has stopped.

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I think we figured it out. Believe it is the throw out bearings.

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My 2000 130 had the same problem. I took it back to the shop and it was determined that my belt needed replaced. It is perfect now. I neglected to ask how it could be the belt considering the fact that it didn't squeek before the alternator died.

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Because the alternator puts a load on the engine of several horsepower, the belt must be very tight. However, if it is too tight, the bearings of the alternator shaft will wear out quickly. To tension the belt properly, adjust until there is about 1/2 inch of play in the center of the longest span. If this does not stop the squealing, the belt may have been glazed from being too loose, and needs to be replaced.

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