Squealing is associated with belt slippage. 1) ensure that the belt is tight - at the longest distance between two pulleys it should be possible to twist the belt by about 90 degrees only. 2) with the engine running check funder the hood or the free running of the pulleys. a) Ask a colleague to engage the power steering from lock to lock and see if the power steering pump pulley does not cause slippage. b) set the air con to low and watch what happens when the compressor pump solenoid engages. If the belt begins to slip on the air con compressor pulley it is likely that the compressor is beginning to fail by seizing up. In that event preserve the belt simply switch the air con off and pray for cooler weather until the compressor can be overhauled.
SOURCE: squealing belt
Causes of problem like yours can be:
Hope I helped you
SOURCE: Belt squealing when first started
The squeal when first started is most likely coming from the alternator belt. You need to have the tension of the belt checked to make sure it is properly adjusted. If you had a shop due it have , have them recheck it. Or stop by a local shop and they shouldnt charge you to check it. But its all in how you ask, if you go in and tell them your problem most likely they will try to get you for a fee to diagnose it.Just ask to have them check the belts and make sure there tight.If its ok, has anyone tried to fix your sqeul by spraying anything on it? if so your belt could be slipping from the lube they used. there is one more thing you can try, providing all the pullys/ tensioner pully if equiped are straight. If it is a serpantine belt(flat/multiple grooves) not A v-belt
when the engine is off,you take a tablespoon or so of corn starch, yes the stuff in the yellow box in the kitchen, and put it on the inside oif the belt. Its acts like a dry lube. I learned this trick at the GM dealership, from a factory bu;lliton. good luck
SOURCE: 03 kia spectra new alt and belt random squealing now no heat
right size belt ? cheap belt ? have battery tested
SOURCE: alternator drive belt squealing
yeh, mine did the same thing with a hydralic belt. it was the bearings. mazda capellas use a lot of 6202 bearings which, luckily, are fairly cheap, and are commonly used in pool pumps. so you can find them at pool pump repair stores. although pool pumps use 6202 2RSR bearings. these are just the water proof type, but are excactly the same size and can be used.
to test if it is a bearing problem, remove the belt and try to twist the individual wheels by hand, you should be able to turn the 2 smaller ones.
from memory the alternator belt is in a fairly in accessable postition so the belt is going to be hard to put back on.try other things first, like wiping the inner side of the belt with a dry cloth to remove moisture.
worst case senario is your alternator has, or is starting to, seize up and you need to replace it.
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