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My 2005 Taurus started making a noise. It sounds like it's coming from the back pulley. Maybe like a bearing going bad. What does this pulley run?

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Have someone check it, the noise may be your a/c compressor clutch. Or it may be as simple as needing a new serpentine belt. I would have it checked by a mechanic first, then go from there.

Posted on Jul 29, 2009


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Bad oil pump ?

Turn your A/C off, the compressor can make noise if bearings are dry or system is low on compressor oil.
Remove your serpentine belt. Turn pulleys by hand to check for roughness. Bearings in those pulleys routinely go bad.
You may get computer warnings with the following test, but with serpentine belt removed, run engine for 2 or 3 minutes. Do this on a warm engine after serpentine belt is removed. The warm oil will not mask the problem like cold thick oil can. Noise generated means problem is internal.
If this is a stick shift transmission sometimes the clutch bearing can make noise and is a sign that bearing is bad.

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2005 dodge grand caravan 3.3 77000 miles starts and runs fine after initial mid grinding sound goes away approx 1 min and30 seconds warmup belts test good a little shine on major belt o

Sounds like something with bad bearings. Check in the area of air conditioner compressor or power steering and yes water pump.even the belt tightener will do that.

Sep 21, 2017 | 2005 Dodge Grand Caravan

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My car makes a loud squealing noise when turned on. Sounds like its coming from the belts.

That could be from a loose or cracked serpentine belt which might be caused by the spring loaded tensioner wearing out and not keeping the belt tight. Or it could be one of the pulleys having a bad bearing. If you take off the serpentine belt and turn each pulley you should be able to hear or feel which one it is.

Sep 26, 2011 | 2005 Ford Taurus

1 Answer

My a/c is running fine, but when the car is running it is making a loud grinding sound. Can the a/c clutch hub be the problem. Or does the entire compressor have to be replaced?

Not being able to hear the noise myself, I can only guess that it is the bearing in the pulley or the clutch itself is coming apart. Either way these two problems can be repaired without replacing the compressor. Now you can possibly have a compressor coming apart internally and still be cooling but lets just hope that is not the problem. I would place my best guess on one of the first two items I mentioned. I have replaced hundreds of pulley bearings over the years and only ten or so clutches.

Sep 06, 2011 | 2005 Ford Taurus

1 Answer

My 2005 Laredo is beginning to make a light rattling noise, and it sounds like it's coming from one of the pulleys. Could this be the water pump going out? The Jeep has 58K miles.

Easiest way to find out would be to try and rack the water pump pulley back and forth. Should be no play. Any play indicates worn bearings.

Dec 14, 2010 | 2005 Jeep Grand Cherokee

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My 2005 3.8 grandcaravan has a rhythmic growling sound coming from the passenger side of the motor at idle. once moving it isn't heard. seems to just be getting worse and worse over time.

odds are the "growling" noise is a bearing on a pulley going out. Could be anything from altenator, steering pump, water pump, but most likely just an idler pulley. You need a mechanics stethascope to diagnose and then just need to replace the proper pulley.

Mar 09, 2010 | 2005 Dodge Caravan

1 Answer

Noise coming from alternator belt pulley

never spray wd40 on your belts,if it gets on the pulley the alternator or power steering will slip and not work,
listen with an extension bar and pin point noise,if its a bearing in something or maybe just replace the belt for cracks.

Dec 25, 2009 | 2006 Ford Taurus

1 Answer

I have a 2005 Ford Taurus that has 121,000 miles on it, and is making a roaring sound from underneath. Tire Mechanic says it sounds like it is coming from the transmission. I have never replaced the tranny...

It sounds like a hub bearing, turn sharply (but in a safe area) and listen for a change in loudness of the noise. The opposite side of the turn will be the bad bearing (louder turning left indicates right hub bearing, turning right indicates left hub bearing). Please get that fluid changed ;-)

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4 Answers

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check the idler/tensioner pully's and the alternator pully, there is a common problem with one of these 3 going bad, usually an idler pully the best way to check is to get a mechanics stethescope and touch the end to the bolt on the idler pully's you will notice a very distinct sound difference from a smooth pully and one with bad bearings. gm tech here, seen many of these

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Engine whinning

I had the same problem on my 2005 Envoy. Turned out to be the idler pulley bearing. It is just a pulley the belt rides on. The bearing in the pulley was what was making the high pitched whine. I replaced the bearing, and the noise went away.

Jan 12, 2009 | 2005 GMC Envoy

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