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Whining sound coming from pulley side of engine. sounds like a bearing going out.

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Check your power steering fluid and have the pump checked out that is most likely your problem it is very common. also have your powere steering belt checked out.

Posted on Jun 04, 2010

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2003 Mercury mountaineer high pitch whining sounds like front passengers side- just started today - worse when you accelerate - husband thinks it might be idler pulley bearing??


If it is the idler pulley for the accessory belt, it would make the sound at all times the engine is running, not just under acceleration. I would look to the wheel bearing or the brakes on that corner of the vehicle.

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Most whining sounds come from the belt area and are caused by a bad bearing in a pulley. You can remove the belt and start the car to see if the noise goes away. If it does, you need to spin all the pulleys by hand to check for roughness/looseness.

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Whining sound inreases in pitch when engine speeds up whether driving or sitting with transmision in park. Is not affected by turning steering wheel . Sound is also clearly heard at rear of car like it...


I believe your suspition is correct, likely one of the engine accessories driven by the serpentine belt. Look for any pulley that appears to have rust or debris built up behind the pulley near the pulley shaft. Usually if the bearing is going out, the elements will get to it producing some signs of corrosion. Also observe carefully while engine idling for any wobble in one of the pulleys. You can also take the pulleys in both hands and try to force a wobble moving side to side. (best done with belt off) to determine if a component is failing. Thanks, Mike

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My engine is noisy - like a power steering pump going bad but it isnt - a friend said it sounded like the bearings in the alternator going bad - it's a whining sound


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Jan 05, 2011 | 1992 Cadillac DeVille

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Whining sound on driver's side and i was told it was power steering but after new fluid put in and additive it is still whining and now it whines when i am driving straight and not just turning to the...


. Additive in a can isnt going to fix a bad pump. Make sure the sound really is the pump. Take the belt off and see if the noise goes away, if so, then spin and fell every pulley. The tensioner pulley and /or idler pulley could be bad, alternator bearings? a/c pulley bearings?

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I have a very loud whining sound coming from the engine? waterpump bearing?


Could be waterpump,but loud & whining,sounds more like Alternator Bearings. Also Belt Tensioner or pulleys.

Mar 27, 2010 | 2005 Ford F-150

1 Answer

Whinning sound when I accelerate????


It is a great possibility that it is the Belt either slipping (stretched or worn) or that is dirty (causing slippage. To find out for sure:
1. Start and run the engine.
USE EITHER #2 OR #3.
2. BEING EXTREMELY CAREFUL: WITH A SMALL PAPER TOWEL PAD (several folds and layers) CLEAN ALL THE SIDES OF THE BELT(s) WHILE IT IS TURNING. STAY CLOSEST TO FUNCTION (Pulley) THAT THE BELT IS LEAVING FROM AND FURTHEST AWAY FROM THE FUNCTION (Pulley)THE BELT IS GOING TO. IF THE BELT CATCHES YOU/YOUR CLOTHING AND PULLS IT INTO THE FUNCTION IT WILL HURT AND COULD CAUSE PERMANENT INJURY.
OR
3. Spray the Belts (one at a time) with Belt Dressing. Be generous with the spray to coat the topside and underside of the Belt and both the sides of the Belt
4. Accelerate the Engine.
If the whinning sounds disappears then it is the Belt that needs to be replaced.
ALSO: sometimes merely taking the belt off and cleaning the belt (while inspecting it carefully) will eliminate the whining.
CHECK for any leaks especially from THE OIL that could be getting on the Belt and causing the slippage and whinning.
If the whinning sound does not disappear:
A. One (or more) of the Pulley-Bearings is going bad
OR
B. One of the Pump (Water, Power Steering, Oil) Bearings are going bad.

A good way to find out is to run the engine and using an auto stethoscope listen to each function (pulley) individually while it is whining. Most of the time it is a Idle (stationary) Pulley-Bearing or the Automatic Belt Tensioner Pulley-Bearing.
Let me know if this helped or if you have any additional information or questions. Feel free to contact me at FixYa.com!

Jan 17, 2010 | 1998 Ford Expedition

1 Answer

Getting a high pitched whining sound that increases and decreases with accelleration and decelleration


it is your idler pulley. get it from dealer comes with bracket, just use pulley off bracket. take your belt off and your idler pulley is lower right hand side(facing your engine). 15mm bolt, replace pulley and reinstall your belt. it;s a common problem on trailblazers

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I'd remove the belt/belts and check all the idler pulleys. Did you retighten the belts or is it a single serpentine belt with an auto tensioner?

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