annoying constent sqeak from golf mk4

[imotec]

hi there i have a golf mk4 and just lately it has started to squeak on idle but it dont when throttle is applyed i have replaced the fan belt as first port of call any ideas guys

[koolchris99]

no idea, mine it pretty squeeky when its cold.
cant hear it inside only outside on start up

no idea what it is, i have replaced belts. still there

[Greendubber]

My money would be on the secondary air pump...common problem. Will squeel like a pig on start up and then go quiet after a few seconds.

If you google it you should be able to find a guide or 9 on how to fix it.

[imotec]

i have been told it could be the belt tensioner

[Tame Technician]

is it a 1.8T?

If so try it with the oil filler cap removed.

[koolchris99]

imotec said:

i have been told it could be the belt tensioner

i was told that too. i havent tried it yet as it doesnt really bother me.

[phumy]

My money is on the aux belt tensioner, its very common for these to chirp at low revs or when turning the steering when stopped....

[troc]

Is it your girlfriend's earring?

http://www.youtube.com/watch?v=NEFPldXp_u4

(yeah, I know that's not a mk4)

John

[Tame Technician]

If its Diesel disregard the oil filler thing, and secondary air.

Check the alternator free wheel pulley is (free wheeling in one direction) can make the tension jump arround and cause noises.

Always misdiagnosed as tensioner failure by non VW Audi garages.

[imotec]

yeah it did used to squeal when i had full lock on thinking about it is a new alternator the way forward

[imotec]

also it doesnt do it all the time only when you gave it some so thoughts were belt tensioner as it would be more stress on the belt

[Tame Technician]

you can get the pulley separatly for the alternator.

To test if its that, just take the belt off again and try adn spin the alternator by hand, it should free wheel in one direction, if its solid needs a new free wheel pulley.

We do loads on 1.9 and 2.0 TDI's

Also run the engine with the belf off, just to be sure its no anything else

[imotec]

yeah i have done that when i changed the belt belt tensioner is what i think maybe wrong