aux belt snapped today! - Alfa Romeo Forum
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(Post Link) post #1 of 64 Old 13-01-11 Thread Starter
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aux belt snapped today!



Driving home today and i heard a rattly sound from the drivers side and my steering went heavey and my bulb warning light came on. I looked under the wheel arch and there was a hole from where the belt had went pop.

I got the car home and am now wondering how much this is going to cost me

This will teach me not to put things on the long finger ever again.

Please tell me i don't need a whole cambelt job for this.
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No its an easy job, but worth checking the condition of the tensioner itself. I've seen these seize and break the belt.

IIRC its a 15mm spanner to let go the tension on the belt(although you wont need to lol) and a 13mm to release the tensioner itself.
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bleepin hell, is it your shiny new motor?
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(Post Link) post #4 of 64 Old 13-01-11 Thread Starter
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Yeah man. The shiny new one. I had a whiney sound from the engine and I put it on long finger. My own fault. I'll have to get it looked at next week.
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**** Barry, sorry to hear that, I hope it doesn't cost to much €€€
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Not sure on the V6, but on the TS, you really don't want to chance it, and do the timing belt as well. Best bet is to get a specialist to look at it. Hope yours didn't do any damage Best of luck man
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I think the waterpump is ran off the aux belt so I wouldn't drive it man until you get another one on and check the tenisoner.
 
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Didnt' realise it was a V6 (nice car btw), so yes its a bigger job as Damien says
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Also check the pump etc to see what was making the noise just incase it wasn't the tensioner that was ****** etc.
 
(Post Link) post #10 of 64 Old 14-01-11 Thread Starter
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Fantastic news lads. I am actually in shock about this. I don't think it has settled in. So i am probably lookin at big wedge for this. Foook!


Damien : Looks like that's the coilovers put on the back burner. Sorry man.
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Originally Posted by bat_lezerby View Post
Fantastic news lads. I am actually in shock about this. I don't think it has settled in. So i am probably lookin at big wedge for this. Foook!
Ah crap.... did you get a quote for the job?
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I haven't got a price yet. I have read around i am considering getting the spanners out for this one. Worst case scenario i have to get it driven to Gerry on the back of a recovery truck (which is what i would have had to do anyway.) I need to do my gear linkage as well so........

I had a look this morning and the belt hasn't actually snapped. I am going to have a look later and post some pics in the tech lounge and make a decision as to what to do.


Theres a thread here where a lad did his on a TS. Don't know if it's the same for V6s.

https://www.alfaowner.com/Forum/alfa-...threading.html
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Dont even start it. if that belt comes off and hits the cambelt you are done for!
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I won't man. Thanks for the heads up. Hopefully i get out of the office before it gets dark so i can get a proper look.


Back to the peuce focus it is..........
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Hard luck man.. if it's any consolation the aux belt is a (fairly) easy job to replace. Just a case of taking off part of the plastic wheel arch liner and threading in a new one. Sounds like one of the pulleys or the tensioner must be gone if the belt hasn't actually snapped

Don't drive the car too far with the belt off as the waterpump is driven by the aux belt.. so you'll overheat the engine. When was the cambelt last changed?

Last edited by GavinH; 14-01-11 at 12:15.
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dont sweat this..

the belt is cheap, and even the idler and tensioner are cheap. worst case scenario is the water pump seized and caused the belt to throw, unlikely, though, the usual way water pumps fail is if the impeller breaks up.

most likely case, either a stone got into the belt and broke it (only needs new belt, very cheap and easy 5 min job) or the idler or tensioner collapsed, moving the belt onto the pulley 'fence' shredding it. at worst, you need the belt, tensioner and idler. this job really shouldn't cost more than €150 at most.

engine damage is highly unlikely, dont panic - this isn't a big deal. recover the car to a garage, or even get a mobile mechanic out, this is not a job that requires specialist knowledge - they should charge no more than 1 hour labor at the very most (assuming it needs the tensioner and idler as well)

it may just be someone neglected to change the belt and it went through old age.

Dont drive it with the aux belt off though, you will overheat the engine extremely quickly. check the tensioner and idler very carefully too, you were lucky this time, as its not unheard of for snapped aux belts to take the cam belt out, but luckily for you, this time it went outwards towards the wheel arch, instead of inwards towards the cam belt!!

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Thanks lads. How would i know if the water pump has seized ? Which pulley drives that? I presume if i turn that pulley and it won't turn there lies the problem.
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Just to reiterate, as someone has said don't drive it far.

Don't even start it... at all.
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(Post Link) post #19 of 64 Old 14-01-11 Thread Starter
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I won;t man. Thanks for the input here lads. You have put my mind at ease.
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Take a look at the first picture on this page, the water pump is the middle of the top 3 pulleys, just above the crank (the one with all the oil on it).

https://www.alfaowner.com/Forum/motor...-cam-belt.html
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I stick my hand under the wheel and give that a turn later. Hopfully it still turns. If it does i think i will attempt this myself.
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its right bang in the middle. its very unlikely its seized. get the two black plastic pulleys (tensioner and idler) and see if they rock or are rough to turn. there should be no movement, and should turn without notchiness.
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Damien : Looks like that's the coilovers put on the back burner. Sorry man.
No bother man they will probably still be here lol.
 
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To re-iterate about tensioners and idlers - on the V6 the auxiliary belt runs over the following pulleys (not in order): Alternator pulley, power steering pump pulley, air con compressor pulley, waterpump pulley, aux crank pulley (this is the driving wheel for the aux belt), big idler pulley, small idler pulley, belt tensioner.

I would say you need to check how the power steering pump, a/c compressor, alternator and waterpump all feel, they should turn fairly freely. If there is a problem with any of these it can damage your aux belt. If all of these feel fine, then you can proceed with the repair. Seen as you've had a failure, I would do nothing else than to change both idlers and the tensioner for the auxiliary belt, and fit a new belt. Also inspect the aux drive pulley on the crank, these also act as a balance for the crank and there is a rubber element to them which can deteriorate with age.

Best of luck with it - don't start the engine until you've either repaired it or at least removed whatever is left of your auxiliary belt. Don't run the engine for more than 30 seconds or so cause you've got no waterpump until a new belt is fitted.

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(Post Link) post #25 of 64 Old 15-01-11 Thread Starter
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Cheers Dan. Much appreciated.

I just had a (proper) look in the light today. The belt hasn't come off at all. I saw it in the dark with a torch and saw that there was a hole under the arch. i put 2 and 2 together and assumed something had shot through the hole. It looks as if the belt is exposed (which can't be normal?) but there is a strange noise coming from it also when the car is run. there is also a bit of what looks like oil around where the belt is.

So what i have here is :

Piece under arch missing. (i am assuming this has been missing since i bought the car.)
Belt still running with strange noise.
Oil / Fluid around where belt / bottom of block is. (checked P/S Fluid and oil levels all fine so can't be major leak.)
light bulb warning light on. (could be missing bulb i suppose but this came on at same time that P/S and A/C went.
P/S / A/C gone.

Could this just be because the belt has been "exposed to the elements" and is slipping?
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