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Tension pulley noise - 1999 Chevrolet Venture

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  • Chevrolet Master
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Check belt alignment and tension, replace tensioner pulley or belt.

Posted on Nov 03, 2013

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SOURCE: tension pulley makes rattling noise

Replace it.

Posted on Aug 09, 2012

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Power steering pulley or tensioner pulley?


Take the tension off the belt and then move each pulley by hand . If the tensioner pulley feels rough or makes a noise, replace it. Same goes for the power steering, although the pump may be noisy without the pulley feeling loose.

Nov 17, 2014 | 2005 Dodge Neon SXT

1 Answer

Makes squealing noise


You need to check the belt that drives the alternator for proper operation. The belt may be old and worn, or a pulley may be not freewheeling, but seized or with a bad bearing. Possibly the tension on the belt is too loose from a worn out tensioner.

First, spray a little water on the belt with engine running and see if noise goes away, possibly a worn belt. Pull the belt off and check all pulleys. Spin them by hand and see if spins easy, no rough feeling or a catch when spun. Check alternator pulley, idler pulley, tensioner pulley, PS pump pulley and A/C compressor pulley-check them all for free wheeling. If good check the tension on the belt when installed. If unsure, have a mechanic check tension with a belt tension tool.
If belt is good and pulleys good, check alternator output with a voltmeter on the battery with engine running. If voltmeter is below 13.5 volts, the charging system is still not working properly. Have it checked out.

Sep 29, 2013 | 2000 Mitsubishi Galant

1 Answer

I replaced the altenator and the serpentine belt two weeks ago. Now i hear a squeaking noise. I tried a spray for the belt but the noise is still there.


Check your tensioner pulley -- if you do not have enough tension on the serpentine belt, it will slip on the pulleys and cause a squeaking noise (very loud and high pitched). if you push on the serpentine belt with your hand, it should not more more than about an inch -- if it does, you are low on tension. If it does not have any give at all, then you have too much tension, and one of your pulleys might not be turning properly, causing that same noise. If your tension is right, and your car is still making that noise ... and belt dressings (the spray you probably used) are not working to stop it, then it might be a piece of rubber stuck on one of the pulleys, but this usually will not make that sound ... just smoke and a burned rubber smell.

May 24, 2011 | 2005 Pontiac Grand Prix

2 Answers

Need to replace a pulley on a 2001 silhouette. don't know which onw though


The pulley youll need to replace is called a pulley tensioner,it comes with a automatic tensioner and a pulley all in one unit, when this tensioner wears the drive belt can no longer maintain a correct tension, when tensions are loose a belt noise develops as high RPM are achieved you develop a squeeling noise even at start up. Failure to replace a worn tension developts a glaze on the drive belt thus wearing it out quicker,by all practical means if you reuse the same belt the rotation must be followed,drive belt being rubber in nature developts conicity and fail if rotation is not maintain,so it always a good idea to replace the drive belt when you replace the pulley tensioner

Apr 26, 2011 | Oldsmobile Silhouette Cars & Trucks

2 Answers

Noise on belt tensioner or idler pulley


Carefully check the condition of the belt, the tensioner, and the idler pulley. I had the same thing happen and once I knew where to look, I could see that my idler pulley bearings were bad (understatement...they were GONE!)

Your idler pulley and tensioner need to look even and straight and not leaning in or out. A sure sign of a problem is if one or the other leans in toward where the tension from the belt would be on it.

The best way to check is to buy, rent, or borrow a serpentine belt wrench to take the pressure off and then try and wiggle the tension and idler pulley. If you feel any play, replace as soon as possible. I dragged my feet and ten days after I heard the noise, my idler pulley flew apart right as I pulled into work.

Feb 19, 2011 | 2003 Toyota RAV4

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

1 Answer

The 2001 Windstar we have here only has 7 pulleys and the diagram dosnt match any ides.


here you go. please rate, thanks

Item Part Number Description 1 8620 Drive Belt 2 10300 Generator Pulley 3 6C348 Idler Pulley 4 6B209 Drive Belt Tensioner 5 3D673 Power Steering Pump Pulley 6 2E884 A/C Clutch Pulley 7 6A312 Crankshaft Vibration Damper Pulley 8 8A528 Water Pump Pulley
s1w~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: The drive belt tensioner has no provision for adjustment and will be damaged if forced to travel beyond its operating range. Automatic tensioners are calibrated at the factory to provide the correct amount of tension to the belt. There is no need to check tensioners for proper tension.
NOTE: Drive belts (8620) with automatic drive belt tensioner (6B209) do not require adjustment.
NOTE: When a drive belt is installed new or reinstalled after a service procedure, the drive belt does not fully seat into pulley grooves until engine has run for several minutes.
This vehicle is equipped with:
  • a V-ribbed serpentine accessory drive belt.
  • automatic drive belt tensioners.
New drive belts should be of the same type as originally installed.
Drive belt chirp is a regularly occurring chirping noise that occurs due to:
  • pulley misalignment.
  • excessive pulley runout.
It can be a result of a damaged pulley or an incorrectly replaced pulley that was not correctly aligned.
To correct drive belt chirp:
  • determine the area where the noise comes from.
  • check each of the pulleys in that area with a straightedge to the crankshaft pulley (6312) for front accessory drive and the water pump drive pulley to the water pump.
  • look for the accessory pulley to be out of position in the fore/aft direction or at an angle to the straightedge.
Drive belt squeal is an intermittent noise that occurs when the drive belt slips on a pulley during certain conditions such as:
  • engine start-up.
  • rapid engine acceleration.
  • A/C clutch engagement.
Drive belt squeal can occur under the following conditions:
  • The A/C discharge pressure goes above specifications:
    • The A/C system is overcharged.
    • The A/C condenser airflow is blocked.


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Feb 27, 2010 | 2001 Ford Windstar

1 Answer

The main pulley shakes and makes a clicking noise. When I tried to loosen the tensioner belt bolt it came loose easily and won't tighten up all the way, almost like it is stripped. I was thinking that the...


replace the tensior and tesioner pulley.

did you remove the belt before you tried to loosen the bolt? when you say main pulley, do you mean the pulley on the tensioner? by tensioner belt bolt do you mean the bolt secureing the pulley to the tensioner arm?

Feb 26, 2010 | 2005 Chevrolet Cobalt

1 Answer

Change serpentine belt and tension pulley and idle pulley and


could be the alternator, water pump
take the belt and spin all the pulleys and listen for noise and make sure they turn smoothly
another trick is to take a can of wd40 or equivalent and spray the bearings 1 at a time till the noise goes away or quiets down

May 15, 2009 | 1996 Ford Taurus

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