Loud squealing belt. belt dresssing not helping

serpentine belt is getting old and hard and the cold weather was causing it to slip
check belt condition ( small cracks across the grooves = scrap and get a new one) and check tension

What is causing that irritating noise? ' DSMtuners

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I don't think its the CPS, but I do know that WD40 will make a squealing belt even worse. If you havnt replaced the belt yet, I would do that.

Let us know if that helps.

Bearings in Alternator, water pump, power steering pump or even a squeal from Vacuum line, EGR diaphram or similar. Check power steering fluid level.



Now when you replaced the tensioner, did you notice more pulleys that were just "there" and not connected to anything? These are idler pulleys and are helpful in routing the belt. They have bearings too!

Pleae rate my info.

Squealing is most common with loose or worn belts, I would start by replacing the drive belt on the front of the motor and go from there, Its easier to troubleshoot a squealing motor if you know that the belt or belts are good.

its more than likely the alternator drive belt needs re tensioning if its got aircon that belt may cause the same problem just get the drive belts checked and re tensioned

will try to assist you. the loud squealing is most likely a belt thats loose. when you start the engine it squeals for what?30seconds? when you turn the heater on it puts a drag of power from your engine and the engine is trying to compensate. so it [engine] asks for power,puts drain on engine and the loose belt squeals.a loose belt will squeal,simply because it's trying to do it's job.but loosing traction. so it squeals. check for play in belts with engine off of course. grab each belt by hand. if it has more than1/4 inch play or [slack] it needs adjustment,or replacement. hope this helps! thank you for choosing fixya.com we are here for you 24/7 7days per week! good luck!!

Try replacing the belt tensioner. Comes out easily, once you figure out access to it. Remove inspection panel inside front passenger side wheel well. Tensioner is right there, two bolts. If the spring gets weak, the belt will squeak.

Have your fan and other belts checked/replaced!
Rarely but sometimes a can of belt dressing will stop the squeal if the belt's just a little to dry!
Check your oil!
Check your trans and other fluids if you don't think it's a belt!
jackiaria