Squealing noise on start up

5.0 V10 50v biturbo - 571 bhp
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jpr36
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Squealing noise on start up

Post by jpr36 » Tue Aug 24, 2021 9:39 pm

Evening all, over last few weeks occasionally on start up a high pitched squeal or screech which disappears after about 5-10 seconds. Thinking a belt or tensioner problem but any thoughts welcome, thanks

Jim Haseltine
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Re: Squealing noise on start up

Post by Jim Haseltine » Tue Aug 24, 2021 11:32 pm

You've only got one belt and tensioner on the engine - it drives the alternator. Not only was the belt on my car very badly cracked in a number of places but the tensioner had seized slightly - some lubrication and working the pulley back and forth with a long lever freed it up. A replacement belt was peanuts from a conveniently local supplier.

jpr36
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Re: Squealing noise on start up

Post by jpr36 » Wed Aug 25, 2021 2:50 pm

Thanks Jim. If it is that, is it front end off to replace?

Jim Haseltine
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Re: Squealing noise on start up

Post by Jim Haseltine » Wed Aug 25, 2021 6:27 pm

Bumper off most certainly. You might be able to get away with backing off the radiator bolts almost to the ends then pulling the rad forwards as far as you can get it. Depends what tools you have access to and how big your arms are - it'll be tight for elbow room whatever the answer is.

BobBobson
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Re: Squealing noise on start up

Post by BobBobson » Wed Aug 25, 2021 8:10 pm

The Belt is doable with just the bumper off and the oil and power steering fluid coolers swing out of the way. If you’re replacing the tensioner and pulley then imho you’ve got no chance without moving the radiator carrier forward a few inches.

jpr36
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Re: Squealing noise on start up

Post by jpr36 » Thu Aug 26, 2021 10:02 pm

Thanks guys

don0301
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Re: Squealing noise on start up

Post by don0301 » Sat Aug 28, 2021 10:48 am

I get squealing noises with FOT. Only happens with passengers, weirdly. :wink:
Ferrari 488 Spider
C6 RS6
E46 M3 convertible
Nissan 200sx mk 2
Vauxhall Senator
Ford Sierra 1.8LX
Peugeot 205 1.9 GTi
Vauxhall Belmont SRi
Vauxhall Astra 1.3
Vauxhall Astra 1.3
1st car Datsun 120 FII Lime green....yeah :shock:

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