Belt noise?

peelaaa · 16th November 2017, 10:41

Hi,

over the last few days I have heard a noise from engine when cold, it increases with revs and sounds like a revolving belt noise. Not rattling, but as if it would need some lubrication. When engine is warmed through, there is no noise.

Any ideas?

Diesel done 216k

roverbarmy · 16th November 2017, 12:58

Check the belt tensioners for wear and the belts for contamination.

Mike Noc · 17th November 2017, 05:54

Noisy water pump? You can check that and the other pulleys by removing the belts and turning them by hand checking for any roughness.

rustymotor · 17th November 2017, 08:28

What I tend to do is at tick over give everything a good dose of WD40 then see what squeaks and what doesn't..alternator bearings get dry etc..

thegreatdaddo · 24th November 2017, 20:03

It could be noise from the aircon compressor due to low gas (assuming you have aircon). The solution is to have re-gas. Should go away if you deselect aircon (econ button).

peelaaa · 8th December 2017, 18:30

Just getting back to this.

Put a bit of water on the pulley closest to the front of car( power steering?) and noise went away for awhile.

Does this mean there is dirt on the belt causing the noise?
When engine warmed up, there is no noise

COLVERT · 9th December 2017, 19:36

Quote:

Originally Posted by peelaaa

Just getting back to this.

Put a bit of water on the pulley closest to the front of car( power steering?) and noise went away for awhile.

Does this mean there is dirt on the belt causing the noise?
When engine warmed up, there is no noise

When you first start the engine for a short while the alternator charge rate is high. This puts an extra load on a partially worn drive belt. Hence the noise. As the load drops the noise decreases. You are artificially reducing the load by putting water on the belt so the noise stops.

Also the tensioner needs checking in case this is the cause.

jackatesme · 9th December 2017, 19:44

I had similar,changed both belts and both tensioners. Fixed problem. Bought parts myself,i found reputable garage,charged about £70 to replace all.

T16 · 10th December 2017, 18:10

Just on this...

Ive a similar squeaking noise (Not that bad) on cold starts.. I was going to drop the belt off and investigate, if it was the Steering pump, how free is that to turn when the engine is off?

Its really annoying as the sound is almost impossible to locate, sometimes I swear its the AC Tensioner, other times I swear its coming from the PS pump.

A/C tensioner and belt are only 5000 miles old though, so I would be surprised if it was that. Could be the belt itself I suppose!

SCP440 · 10th December 2017, 18:42

Fan Belts can make a noise for no apparent reason, I had a Ford in recently with a noisy belt, some water on it made it silent so I fitted a new one and silence was restored. No cracks or damage on the old one but maybe as they dry out with age that is enough? All the pulleys were silent and smooth running.

I know some manufacturers recommend that belts and pulleys are replaced at 60k so maybe this should be taken into consideration?

I did all my pulleys and fan belt on my 260 at 65k and the engine is noticeably less noisy than it was before they were replaced.

16th November 2017, 10:41	#1
peelaaa Posted a thing or two 75 cdti 2004 contemporary Join Date: Apr 2008 Location: meath Posts: 1,551 Thanks: 272 Thanked 80 Times in 58 Posts	Belt noise? Hi, over the last few days I have heard a noise from engine when cold, it increases with revs and sounds like a revolving belt noise. Not rattling, but as if it would need some lubrication. When engine is warmed through, there is no noise. Any ideas? Diesel done 216k

16th November 2017, 12:58	#2
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	Check the belt tensioners for wear and the belts for contamination. __________________ Oil in my veins!

9th December 2017, 19:44	#8
jackatesme This is my second home rover 75 saloon.Renault Captur 1.5 diesel. Join Date: Mar 2013 Location: rhymney Posts: 3,661 Thanks: 2,269 Thanked 1,242 Times in 702 Posts	I had similar,changed both belts and both tensioners. Fixed problem. Bought parts myself,i found reputable garage,charged about £70 to replace all. __________________ - John B signing out Maralyn was born 9th Sept 2004 14.44.48. 103,597 of 112,381 (75s) 3,021 of 4,744 Connie SE 239 of 1.685 Platinum Gold. "Maralyn": Platinum Blonde,Troublesome,Unpredictable.

17th November 2017, 05:54	#3
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,549 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Noisy water pump? You can check that and the other pulleys by removing the belts and turning them by hand checking for any roughness.

17th November 2017, 08:28	#4
rustymotor Posted a thing or two Rover 75 Tourer Join Date: May 2017 Location: Hull Posts: 1,848 Thanks: 216 Thanked 432 Times in 340 Posts	What I tend to do is at tick over give everything a good dose of WD40 then see what squeaks and what doesn't..alternator bearings get dry etc..

24th November 2017, 20:03	#5
thegreatdaddo Regular poster Rover 75 Tourer Join Date: Jul 2012 Location: Bristol Posts: 52 Thanks: 7 Thanked 6 Times in 6 Posts	It could be noise from the aircon compressor due to low gas (assuming you have aircon). The solution is to have re-gas. Should go away if you deselect aircon (econ button).

8th December 2017, 18:30	#6
peelaaa Posted a thing or two 75 cdti 2004 contemporary Join Date: Apr 2008 Location: meath Posts: 1,551 Thanks: 272 Thanked 80 Times in 58 Posts	Just getting back to this. Put a bit of water on the pulley closest to the front of car( power steering?) and noise went away for awhile. Does this mean there is dirt on the belt causing the noise? When engine warmed up, there is no noise

10th December 2017, 18:10	#9
T16 I really should get out more....... ZT CDTi 135, ZT260SE Join Date: Feb 2011 Location: Dundee Posts: 2,877 Thanks: 10 Thanked 331 Times in 213 Posts	Just on this... Ive a similar squeaking noise (Not that bad) on cold starts.. I was going to drop the belt off and investigate, if it was the Steering pump, how free is that to turn when the engine is off? Its really annoying as the sound is almost impossible to locate, sometimes I swear its the AC Tensioner, other times I swear its coming from the PS pump. A/C tensioner and belt are only 5000 miles old though, so I would be surprised if it was that. Could be the belt itself I suppose!

10th December 2017, 18:42	#10
SCP440 I really should get out more....... MG ZT-T 260 Join Date: Feb 2016 Location: Witney Posts: 2,504 Thanks: 6 Thanked 910 Times in 571 Posts	Fan Belts can make a noise for no apparent reason, I had a Ford in recently with a noisy belt, some water on it made it silent so I fitted a new one and silence was restored. No cracks or damage on the old one but maybe as they dry out with age that is enough? All the pulleys were silent and smooth running. I know some manufacturers recommend that belts and pulleys are replaced at 60k so maybe this should be taken into consideration? I did all my pulleys and fan belt on my 260 at 65k and the engine is noticeably less noisy than it was before they were replaced.