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(Post Link) post #1 of 5 Old 16-07-04 Thread Starter
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running without a belt

There's a noise coming from the belts end of the engine on my 146ti. I think it's probably a bearing in the alternator so I'm going to put it on thew ramp and have a closer listen (with a screwdriver). But, if that fails to convince me that it is in fact the alternator causing the noise do you think it would cause any problems if I took the drive belt off and ran the engine? Obviously not to drive it with no power steering.
I reckon this would then let me know if the noise was from where I think or something more serios like a cam-belt tensioner.
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Re: running without a belt

Be carefull your Pants don't fall down and you will trip up, it could be
Sorry... ....What else does the Belt drive, if it drives your Water pump the Engine might overheat very quickly.
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Re: running without a belt

Water pump is driven by the main timing belt. It will run but given the large amount of electricity needed and the alternator not giving any, the car will not run for long.

From experience it;s more likely to be the bearing in the alternator belt tensioner making a squeaking noise. Change both the belt and tensioner at the same time.
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(Post Link) post #4 of 5 Old 16-07-04 Thread Starter
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Re: running without a belt

"Pants" - very American
AFAIK the water pump is driven from the cam belt. I think the "fan belt" for want of a better term drives the alternator, power steering pump and air con.
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(Post Link) post #5 of 5 Old 16-07-04 Thread Starter
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Re: running without a belt

Quote:
Originally Posted by Nigel S
From experience it;s more likely to be the bearing in the alternator belt tensioner making a squeaking noise. Change both the belt and tensioner at the same time.
Thanks Nigel, that sounds cheaper than the alternator
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