Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[jiho102]

Have a squeeling noise under the bonnet and pretty sure its one of the pulleys but how do you go about finding out which one it is.
             Many thanks, Joe

[tidla]

if your pretty sure its on the auxilary belt then spraying wd40 on each pulley in turn till the noise disipates.

[shane1000]

long handled screwdriver usually works with your ear on the wooden part, tip on the casing near the pulley.. money is on cam belt tensioner pulley

[albitz]

Aux. belt tensioner is usually the favourite. Best way to find out is to slip the belt off the pulley and run the car for a short time to see if the noise stops, if it does you have found the problem.
My aux. belt tensioner got very noisy last week. I took the pulley off (1 bolt) repacked the bearing with grease and put it back and it sounds fine now.

[Welung666]

Most likely Aux belt tensioner. A squirt of WD or PTFE type spray should identify which is making the noise.

[fiend61]

when you do find out that it is the tensioner pulley  , and if you buy new dont let them tell you that the tensioner comes as one bit 
the pulley is available seperate 

[bob.dent]

Have a squeeling noise under the bonnet and pretty sure its one of the pulleys but how do you go about finding out which one it is.
             Many thanks, Joe

Just had exactly the same with mine and it was the aux belt tensioners.

[Oh]

I'll generally grab a hose a few feet long, about a meter for those of you on metric scales. Put one end to my ear and go from pulley to pulley with the other end on the center to listen for bearings, I always find the squeaky dry bearings.

[freecall666]

could it be the cam belt retainer bearing they make a whirring sound with tapping sound in it. :question

[Welung666]

I'll generally grab a hose a few feet long, about a meter for those of you on metric scales. Put one end to my ear and go from pulley to pulley with the other end on the center to listen for bearings, I always find the squeaky dry bearings.

Some of us olduns still prefer the feet and inches

[JasonH]

I'd do two things:

1) Slip the aux belt off (15mm socket on the pulley, turn as if tightening to take the tension off the belt then slip the belt off the big pulley in the middle (water pump) because it has no lip). Mind your fingers.

Now start the engine. Don't run it for long because you've disconnected the drive to the water pump. A couple of mins will be fine. No noise then you know it's one of the pulleys for the aux belt.

Stop the engine.

2) Gently spin each pulley by hand, any roughness, I mean any roughness, and that's your problem. Odds on it's the tensioner pulley itself (top left).

[feeutfo]

I'd do two things:

1) Slip the aux belt off (15mm socket on the pulley, turn as if tightening to take the tension off the belt then slip the belt off the big pulley in the middle (water pump) because it has no lip). Mind your fingers.

Now start the engine. Don't run it for long because you've disconnected the drive to the water pump. A couple of mins will be fine. No noise then you know it's one of the pulleys for the aux belt.

Stop the engine.

2) Gently spin each pulley by hand, any roughness, I mean any roughness, and that's your problem. Odds on it's the tensioner pulley itself (top left).

Exactly that, but to add the aux belt tensioner baring can be easily re greased by flipping the seals with a smell screw driver or similar, they're only a press fit. If it's buggered the pulley with baring set into the plastic wheel is available on it's own without having to buy the complete tensioner as parts dept will tell you.