XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Annoying belt screech on start up

Old Apr 12, 2023 | 01:10 AM
  #1  
Robbo D's Avatar
Thread Starter
|
Senior Member
Joined: Nov 2014
Posts: 409
Likes: 356
From: Norfolk UK
Default Annoying belt screech on start up

And yes here is that post🤣 My car screeches when starting. All belts were replaced a couple of years ago and the tension looks ok on them all. I haven’t tried a belt dressing yet but would be happy to give it a go. My worry is the crank pulley rubber damper thing breaking up which I have read about. Is this a common problem ? I have looked at the availability of a new replacement and it looks like nothing is available in the UK. Your thoughts as always are very much appreciated.

Rob.
 
Reply
Old Apr 12, 2023 | 01:54 AM
  #2  
Greg in France's Avatar
Veteran Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2012
Posts: 14,590
Likes: 10,787
From: France
Default

Robbo
Start the car and spray some WD40 on the belts, one at a time and see which one stop the squeaking. Then leave it and see if it stops it permanently. If it does not, tighten that belt just a touch.
I do not think it will be a problem with the damper.
 
Reply
Old Apr 12, 2023 | 04:06 AM
  #3  
Grant Francis's Avatar
Joined: Feb 2010
Posts: 28,811
Likes: 11,280
From: Adelaide Stralia
Default

1991 MAY have the flat belt (multi V) for the alternator.
They be a PITA, and stretch, as do all belts, but they do squeal when cold, badly. Gregs spray is good.

Tighten that alternator belt, if its the flat style, just a touch.

The AJ16 engines were bad for it, and annual adjustment was needed to shut them up.
 
Reply
Old Apr 12, 2023 | 04:16 AM
  #4  
Robbo D's Avatar
Thread Starter
|
Senior Member
Joined: Nov 2014
Posts: 409
Likes: 356
From: Norfolk UK
Default

Cheers guys. Sound advice as always. Thanks for putting my mind at ease with the pulley. I will check all the belts when doing the CPS later. Oh and by the way the car passed the MOT with no advisories. The tester (James) commented on how clean the car is running with the emission tester showing 0.0% CO and 93ppm HC. The max limits for a pass are 3.50% for CO and 1200ppm for the HC.

Rob.
 
Reply
Old Apr 12, 2023 | 04:26 AM
  #5  
Grant Francis's Avatar
Joined: Feb 2010
Posts: 28,811
Likes: 11,280
From: Adelaide Stralia
Default

Goodo,

Now DO NOT tell the car, that will screw it totally, trust us, they have bigger ears than Microsoft.

Beers on Rob, enjoy.
 
Reply
Old Apr 12, 2023 | 09:23 AM
  #6  
Robbo D's Avatar
Thread Starter
|
Senior Member
Joined: Nov 2014
Posts: 409
Likes: 356
From: Norfolk UK
Default

Multi V belt was a bit slack so tightened that up. Will see how it goes when I have the car up and running again.

Rob.
 
Reply
Old Apr 12, 2023 | 04:06 PM
  #7  
mghirsch's Avatar
Senior Member
15 Year Member
Liked
Joined: Jan 2008
Posts: 352
Likes: 80
Default

If you you have the flat alternator belt, your harmonic balancer may have given up the ghost. Take a crayon or white out and draw a line from the inner part of the balance to the outer part. Start the car and after the squeal see if the lines still line up. If not, you need a new balancer. The bad news is that new ones are not available. The good news is there are companies that will rebuild your old one,
 
Reply
Old Apr 17, 2023 | 04:09 AM
  #8  
Robbo D's Avatar
Thread Starter
|
Senior Member
Joined: Nov 2014
Posts: 409
Likes: 356
From: Norfolk UK
Default

Hi all.
Tightened up the belt a bit and seems to be ok now. Cheers for you help guys.
Rob.
 
Reply
Old Apr 17, 2023 | 04:23 AM
  #9  
Grant Francis's Avatar
Joined: Feb 2010
Posts: 28,811
Likes: 11,280
From: Adelaide Stralia
Default

Another SIMPLE fix to a SIMPLE car, well done.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jeroen
XJ XJ8 / XJR ( X308 )
6
Aug 22, 2023 07:11 PM
allcapeauto
XK8 / XKR ( X100 )
10
Jun 30, 2018 01:20 PM
Srids
S-Type / S type R Supercharged V8 ( X200 )
8
Jun 9, 2013 08:35 PM
Miami XKR
XK8 / XKR ( X100 )
37
Mar 21, 2013 09:45 AM
Bacardi 151
S-Type / S type R Supercharged V8 ( X200 )
12
Sep 22, 2011 06:34 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread

All times are GMT -5. The time now is 02:31 PM.