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[barclay03]

I had a bit of tensioner noise (or thats what it sounds like anyway) and found that the aux belt tensioner had dried out, so i repacked it was quite for a while, until the car heated up and a noise "squeeling" appeared  :-/

Ordered a new aux belt tensioner and fitted that today, staerted the car up and all was quiet again - until the car heated up, same noise came back... now im pretty sure its not the tensioner, but whatever it is its going in time with the engine.

Also just changed the timing belt and tensioners(GM parts), and tbh it sounds like its comming from top left hand side - where the tensioner for the timing belt sits!

Wee bit of background info - also fitted new water pump (think it was a circoli brand?), and my crankshaft pully looks a bit "odd" i.e. the outer ring doesnt appear to be level anymore.

Once the noise start, it doesnt go away, despite how hot or cold the engine is, from first thing in the morning until im home at night.

Anyone any clues on what it could be? Would it be worth pulling it all apart again and checking that timing belt tensioner?

Just foud it strange that it dissapears whenever i strip it down, but as soon as it gets back up to temp it starts again.

P.S. my cam covers are also leaking again (my own fault for buying ebay ones), possibly contamination from the leak?  :-/

cheers for any pointers and info guys, seems all i do on here lately is ask questions about this bloody car!  lol

[The Red Baron]

umm odd one that, couldnt really help you without having a listen. i think staffordshire is a little too far away for that.

[sandune]

Once had a water pump failed which was "whistly-sqeally".might worth a look to see if yours is sitting smug.

[barclay03]

Sir Drink-a-lot - Had me stumped aswell, was all happy that it was quiet again then it started! 

sundane - i had thought about the water pump, tried spinning it by hand etc but couldnt hear any strange noises - at 500 miles i would be dissapointed if it failed!

Looks like im going to take everything apart tomorrow and check the waterpump and timing belt tensioners, see if i can figure out where the noise is comming from

Just been one of those days tbh!.. the aux belt i ordered turned out to be the wrong one, and my golfs starter motor decided it didnt want to engage anymore 

[Darth Loo-knee]

This may sound really stupid but is the cambelt cover catching on the belt or tensioner?

The plastic wiring harness cover that goes horizontal across the cambelt cover vary slightly (two bolts line up properly the other doesn't), in which case if you fit the wrong one you need to bent the cover slightly to get the harness cover to fit. I did this on one car thinking I was changing just the broken harness cover for a good one I had spare in my boot, but when all back together there was a squeak that was in time with the engine. Eventually noticed that the cover was now slightly bent and so replaced with the old harness cover and the noise stopped
Worth a try to see if yours is the same 

[pedroMV6]

Regarding the return of the oil leak, did you clear the breather when you changed the rocker cover gaskets?
My old Vectra V6 has a squealy belt cover after a belt change - just undid the bolts a tad, pushed it up as fas as I could and re-tightened - job's a good un! Hope yours is a simple.

[Bent valve]

Try spraying some wd40 or similar on the aux belt when its running. if the noise disappears you can rule out the cam belt

[barclay03]

OK, wee update!

pulled everything apart earlier, the water pump pully had been grinding slightly on the casing, but other than that i couldnt find any source of rubbing.

Timing belt tensioners seemed ok (and i quickly adjusted them whilst i was there to make sure )

However... i have noticed something that doesnt seem right to me at all, the pulley on the bottom right hand side (i think im right in saying its to do with air con/climate control or something?  :-?) is barely spinning and very "jumpy" like its sticking, that isnt normal operation is it? If its the case, then the belt squeeking i could be hearing could be from it jumpin on that pulley whenever it "sticks"  :-/

Could that also explain why my heaters arent heating up properly and the air doesnt seem to flow too great out of them even on full?