Question about 1990 Honda Accord

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Squeaky belt how can I tell if the loud screech is fom to belt or the bearing on the pulley becaue I tighted the belt on my a/c compressor

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First off check your belt for glazing (shinny gloss look) next you should take a long screwdriver and put the tip up to the body of the AC compressor and put your ear on the handle and you should be able to tell by the sound you get in your ear.BE VERY CAREFULL DO NOT HAVE ANY LOOSE CLOTHING IN WAY OF BELT AREA!!

Posted on May 26, 2008

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I replaced the serpentine belt and now have a terrible screeching with the a/c is turned on.


A couple of things come to mind: if it wasn't screeching before replacing the belt, you may not have routed the belt properly - especially around the belt tensioner pulley; or the bearing on that pulley may need lubrication or replacement; or the A/C compressor bearing may have failed causing excessive resistance on the new belt resulting in screeching. Also, if the belt was not routed properly, the screeching may be coming from another belt-driven (power steering pump, water pump, etc.) but it doesn't sow up until you engage the A/C with its additional drag.

Sep 28, 2013 | 2003 Toyota Avalon

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How to replace an air conditioner compressor and tensioner


The screeching noise is of course the belt traveling faster than the pulley it is around, in other words it's slipping. Hopefully you have a worn belt, it takes quite a bit to pull a compressor. Assuming that the compressor is in working properly and your belt is good, look at the tension pulley. I had a vehicle once that did the same thing and after a lot of "try this" didn't work I got a new tension idler pulley and it fixed it. The old one wasn't putting enough tension on the belt to hold it tight enough to pull everything. Since then I have ran into several that were so weak they wouldn't hold proper tension. Just something that is overlooked a lot of times because he belt seemed tight enough. Just one more thing to try, hope it's not anything with the compressor because as you know they like those compressors and want give them up cheap.
Gillight

Jul 15, 2012 | 1999 Chevrolet Silverado 1500

3 Answers

The belts continue to make a loud screeching noises when i drive over 55. Sometimes when the car is idling the belts make noise. Could it be the tension pulley.


it could be the tensioner, water pump, alternator, A/C compressor, power steering, or even a really bad serpentine belt. The only way to be sure is to remove the s-belt and spin-check the pulleys and listen for squeaks or grinding bearings.

Jan 13, 2011 | 1984 Buick LeSabre

2 Answers

When i run the ac there a loud screech for a little bit the when i sop i will see a smoke comming for under the hood.


probally an wrecked bearing in the ac compressor. or a bad clutch on the ac compressor

Dec 05, 2010 | 1995 Isuzu Pickup

3 Answers

My belt is making a whistling screeching noise. i used belt conditioner and soap both makes it go away as soon as applied but it keeps coming back.


If you have changed the belt I would take it off to see if any of the bearings in a pulley may be going out.You can do this by spinning the pulleys on everything. Spin the water pump,the alt,air compressor. See if they make noise or feel rough while spinning them by hand. Replace whats bad.

Oct 13, 2010 | 1989 Ford F 150

2 Answers

High pitched howling and screeching (yes two different noises). The howling appears to happen when the air conditioning compressor pulley engages. The screeching, my guess would be from the belt. Any...


When the AC compressor kicks on, an electrical load is placed on the alternator and the drive belt that turns the alternator pulley, if not tight enough, can cause the belt to squeal. Replacing the belt should help with that noise if the belt is stretched from wear. The screeching noise can be from a bad idler pulley, a bad belt tensioner pulley or a bad alternator pulley or a failing clutch on a very old ac compressor and rarely a water pump pulley. To check pulleys remove the drive belt and turn them individually to see if they can be tilted up down or sideways with play in the "bearing" of the pulley. Also, you may wish to visually inspect the clutch on the ac and look for melted black rubber around the bolts that secure the clutch to the compressor (stinks,smokes and melts these rubber areas if ac compressor clutch fails).

Jun 06, 2010 | 1996 Saturn SL

1 Answer

I have a 1990 jeep YJ replaced the alternator and now there is a loud screeching noise replaced the belt,replaced new bearing in idler pulley still makes a loud screeching noise?


If the belt is not tense enough it will squeal, so make sure it's tight enough. Otherwise you can use a stethoscope or long screwdriver up to your ear to isolate the source of the noise.

Sep 16, 2009 | 1990 Jeep Wrangler

1 Answer

My serpintine belt started making a loud screeching noise, and eventually slipped off. I got it put back on but its still making a screeching noise. All of this started after i got the AC compressor fixed....


One of the belt pulleys likely has a bad bearing. watch the pulleys for binding while it's running or remove the belt and check each pulley by hand. AC puts more strain on the belt...if the belt is not new and pulleys check out, (and tensioner is working properly) change the belt.

Jun 07, 2009 | 1997 Pontiac Bonneville

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