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paul130TDI

Fan belt / bearing noise

7 posts in this topic

Hi guys,

Recently when starting the car from cold there is a quite lould fan belt noise, almost like a dry bearing or belt. I've booked it in for next week for other bits and pieces under warranty and have asked them to look at this as well. But as usual i couldn't just leave it and started tinkering myself.

Last night i started the engine, noise started, so tried a little wd40 onto the belt, moments later when i tried to move the car forward, holy sh3t, it sounded exactly like there was a tin under the wheel and was being pushed along the road. Jumped out and checked, nothing there. took the car out and for a run and absoulty perfect, im assuming this was just the belt slipping with the oil, but im struggling to understand what would cause the noise.

Does anyone else have this noise from cold start (like dry bearing or fanbelt), mine will be quite lould until 0.5 a mile or if ticking over about 3 minutes.

I'll leave the car with the dealers from the night before to let them hear it.

Cheers again and sorry for all my posts being picking your brains about problems

Paul

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I'm not sure what your problem will be. Difficult to tell without seeing / hearing first hand. Water pump perhaps?

Surely though, WD40 sprayed on to the belt is going to make it slip / perish quickly. I'm no expert but it wouldn't surprise me if you may need a new belt now.

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This morning it was exactly as before, so hopefully the oil hasn't done it any harm, it was a tiny amount really and most likely evaporated off quite quickly afterwards.

It was more the noise i couldn't understand - never heard it before and im assuming it was to do with the oil, btw it hasn't made the noise since and was only on the very first time i moved the car afterwards.

Thankfully the noise has been reported to vw from within about 4 days of picking up the car so fingers crossed they will sort it out either under warrenty or the approved used vw programme

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Hello mate,

my Mar06 GTi starting making a noise similar to what you describe when it was 6 months old, turned out to be one of the belts touching one of the pipes that leads to the lower radiator, all sorted in 5 mins at the dealers. hope your problem turns out to be nothing more sinister.

cheers........Nige

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Hi Guys,

Its been a while from I last posted, but i thought i'd give you an update as this seems to be quite a common problem, even read somewhere there was a TSB issued for it.

Away back after I first heard the start up noise, i left the car in with the dealers. They returned it saying the definitely heard the noise and lubricated the Timing belt. Fair enough it did the trick, but long and behold, 6 months later it gradually started again as i expected.

I let it get worse and only last week got around to leaving it back in again, this time they replaced the entire timing belt, pulleys etc under warranty without question, or even contacting me.

After a google search, it appears this is a common problem. So if you are under warranty and getting a start-up belt noise (i can only describe it as how a dry fan belt would sound) it might be worth a trip to the dealers. I had to leave the car overnight to let them have it for a cold start but so far seems worth it. The car is an awful lot quieter than before, even on idle.

Cheers

Paul

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I had the same problem on my 2.0T A4.

It sounded like this YouTube - Noisy Audi A4 2.0 TFSI cold start

It was always on cold start and I left it at the dealers overnight on 2 occasions so they could hear it at its worst.

I had the ribbed belt tensioner and a partially seized idler pulley replaced but the noise returned within a few months.

It is definitely a dry belt as lubricating it with VAG 'dry belt spray' sorts it out. What was making it worse is I pressure wash the car every time I wash it including the front grille which was suggested was contributing to the belt drying out. Since I stopped pressure washing the grille area, I've had no further problems.

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Flip, yeah thats the exact noise.

Cheers for the heads up on powerwashing, im a bit obsessive with car cleaning, given the gti grill i often hit it well with water.

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