squeaking noise on cold start?

ak121078 · Nov 13th, 2017, 12:28

Hi Guys

Got a bit of a weird mettalicy squeaking noise coming from the belts after a cold start. Goes away once the engine warms up. Any ideas?

https://youtu.be/eCCAADTpd_0

Thanks

Asim

cheshired5 · Nov 13th, 2017, 13:24

The most obvious starting point is the alternator clutch pulley.
Easy enough to test and replace.

60041 · Nov 13th, 2017, 16:59

Try pouring a little water over the belt while it is squeaking; if the noise goes quiet for a few seconds, it is the belt slipping slightly. It is under the greatest load after starting a cold engine as the alternator is drawing a lot of power to recharge the battery.
Check that the belt is clean, without any oil or grease on it: failing that it might need a new belt and tensioner.

polaxc · Nov 13th, 2017, 17:34

I've been having the same for over 0.5year. It's definitely either auxiliary belt or one of its pulleys.

gmonag · Nov 13th, 2017, 19:23

Don't leave it for too long. If the aux belt breaks, it will almost certainly go into the timing belt and wreck your engine.

ak121078 · Nov 14th, 2017, 09:37

Thanks for the info guys.. i'll be sure to have my mechanic take a close look at this when it goes for a service in the next week or so.

Nov 13th, 2017, 12:28	#1
ak121078 Junior Member Last Online: Mar 26th, 2018 13:24 Join Date: Oct 2014 Location: Reading	squeaking noise on cold start? Hi Guys Got a bit of a weird mettalicy squeaking noise coming from the belts after a cold start. Goes away once the engine warms up. Any ideas? https://youtu.be/eCCAADTpd_0 Thanks Asim

Nov 13th, 2017, 13:24	#2
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	The most obvious starting point is the alternator clutch pulley. Easy enough to test and replace. __________________ 2002 S60 SE D5 Manual 209000 miles

Nov 13th, 2017, 16:59	#3
60041 Premier Member Last Online: Mar 28th, 2024 10:19 Join Date: Feb 2010 Location: North Northumberland	Try pouring a little water over the belt while it is squeaking; if the noise goes quiet for a few seconds, it is the belt slipping slightly. It is under the greatest load after starting a cold engine as the alternator is drawing a lot of power to recharge the battery. Check that the belt is clean, without any oil or grease on it: failing that it might need a new belt and tensioner. __________________ 2018 V90CC D4, 2022 XC40 1940 Matchless G3, 1980 Moto Guzzi T3 Coming soon:- 1947Rover 14 P2

Nov 13th, 2017, 19:23	#5
gmonag Premier Member Last Online: Jan 15th, 2024 17:24 Join Date: Jun 2010 Location: Bury St Edmunds	Don't leave it for too long. If the aux belt breaks, it will almost certainly go into the timing belt and wreck your engine. __________________ Greg

Nov 13th, 2017, 17:34	#4
polaxc New Member Last Online: Sep 3rd, 2018 22:05 Join Date: Sep 2016 Location: Bristol	I've been having the same for over 0.5year. It's definitely either auxiliary belt or one of its pulleys.

Nov 14th, 2017, 09:37	#6
ak121078 Junior Member Last Online: Mar 26th, 2018 13:24 Join Date: Oct 2014 Location: Reading	Thanks for the info guys.. i'll be sure to have my mechanic take a close look at this when it goes for a service in the next week or so.

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