strange squeaking noise from alternator area

[tdi-man]

im getting a strange noise from the alternator area ....any ideas ???

i changed the ribbed belt and tensioner 15 months ago.

 

[Lee_R]

Mine was squeeking the other day and i just squirted some WD-40 on the belt, soon stopped it! I assumed it was just the cold weather making it tighter than normal.

Try that?

 

[seventhheaven]

Mine was squeeking the other day and i just squirted some WD-40 on the belt, soon stopped it! I assumed it was just the cold weather making it tighter than normal.

Try that?

You are kidding, right?!

These alternators have a free-wheeling pulley which often ceases and eventually falls apart. With the belt off you need to check if the pulley will spin in one direction without the alternator turning with it - if not it is ceased and will need replacing.

 

[Eeef]

You sprayed lubricant on a rubber belt?

 

[Lewis583]

As already said, it looks like the free wheeling alternator pulley is knackered. what i would do is take the alternator drive belt off and start the engine, if the noise is gone then it is something driven by that belt. then with the belt off, and engine off, grab the alternator pulley and snatch it in one direction and it should spin (freewheel) and then do it in other direction and it shouldn't freewheel.

 

[tdi-man]

ok many thanks

 

[circleswim]

I wouldn't advise spraying the belt with lubricant... It could corrode the belt...

 

[tdi-man]

replaced both pulleys and al is well....