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        General >> Problems >> Squeal when near a full lock.
        
(Message started by: SteveO on Mar 31^st, 2011, 5:14pm)

Title: Squeal when near a full lock.
Post by SteveO on Mar 31^st, 2011, 5:14pm

If I get near to applying a full lock when turning I have just started to get a load squealing sound. It happens when turning left or right.

The only thing that I've done under the bonnet recently is replace the fan belt.

Could anyone suggest things that I can check?

Thanks,

Steve

Title: Re: Squeal when near a full lock.
Post by Matt on Mar 31^st, 2011, 7:28pm

check you fan belt

sound like its slipping when the power steering pump it full lock and under full load

Title: Re: Squeal when near a full lock.
Post by SteveO on Mar 31^st, 2011, 7:58pm

Cheers Matt. I'll adjust the tension upwards a bit and see what happens.

Title: Re: Squeal when near a full lock.
Post by Highlander on Apr 1^st, 2011, 2:59pm

Should be a spring loaded tensioner Steve, although they can fail.

what engine is it?

Power steering fluid level ok?

Title: Re: Squeal when near a full lock.
Post by SteveO on Apr 3^rd, 2011, 8:03am

Hello Highlander, it's a 2.5 VM diesel. I checked the tensioner when I fitted the fanbelt two weeks and rechecked after 300 miles as per the instructions. All were ok then a day or two after I noticed the squeal.

The tensioner seemed fine but I gave a little squirt with WD40 as I opened and closed it in a vice.

I'll recheck the fluid levels later today.

Steve

Title: Re: Squeal when near a full lock.
Post by Mike H on Apr 3^rd, 2011, 12:29pm

It is right though isn't it, it is a bit noisy at full lock normally anyway. (?) This has come up before, but can't remember the details, also that you should avoid holding it on absolute full lock anyway, not good for the rack seals or something, soon as I get that noise I always back off a bit.

This is more a subtle pump type noise, not a squeal, I should be clear.

Title: Re: Squeal when near a full lock.
Post by Mike H on Apr 3^rd, 2011, 12:32pm

Appendix ~ if slipping could be your new belt is too long? Slippery stuff on the pulleys?

True there is no means to adjust the tension

Title: Re: Squeal when near a full lock.
Post by SteveO on Apr 14^th, 2011, 8:37am

It was the tensioner that was at fault. The belt was getting increasingly slack and squealing even at idle sometimes. I swapped one from my crashed car and all is now quiet.
Thanks for the advice everyone.

Title: Re: Squeal when near a full lock.
Post by Mike H on Apr 14^th, 2011, 2:28pm

Oh right!

Title: Re: Squeal when near a full lock.
Post by Mike H on Apr 14^th, 2011, 2:31pm

Matt your avatar keeps failing to load ;D

Title: Re: Squeal when near a full lock.
Post by SteveO on Apr 15^th, 2011, 11:14am

Hi Mike, I didn't think it could be the tensioner because there was no squeal with the old, very worn and slack, belt and I assumed that the new one would be slightly shorter anyway.

Befor fitting the new belt I tested the tensioner by compressing it a short way in a vice, squirting a bit of WD40 in and releasing it. Maybe it didn't release the whole way.....

Title: Re: Squeal when near a full lock.
Post by Mike H on Apr 16^th, 2011, 11:11am

You need someone else do it while you've got the bonnet open so you can have a listen where it's coming from