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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?
Wiki User
∙ 8y ago
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.
Wiki User
∙ 8y ago
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