Notices
Drivetrain Gearbox, Diffs & Driveshafts etc

viscous coupling

Thread Tools
 
Search this Thread
 
Old 08 May 2003, 11:35 PM
  #1  
greasemonkey
Scooby Regular
Thread Starter
 
greasemonkey's Avatar
 
Join Date: Nov 2003
Location: where the wild roses grow
Posts: 5,122
Likes: 0
Received 0 Likes on 0 Posts
Post

Explanation you got sounds like b*ll*cks to me. The front diff in UK cars is open, so it won't wind up when turning. You may get a bit of fight in the centre diff, but even then it shouldn't make any noise; the only ones that do that are the electric DCCD diffs, when locked right up and you're taking a tight-ish corner.

As has been said, a knackered CV joint sounds like the likeliest suspect at this stage.





[Edited by greasemonkey - 8/5/2003 11:36:22 PM]
Old 05 August 2003, 06:14 PM
  #2  
s wat
Scooby Newbie
 
s wat's Avatar
 
Join Date: Aug 2003
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Unhappy

i have a seriuos knocking noise from the front end when on more than part lock, scooby garage says it's the viscous coupling thats 'wound up'. anyone had a similair problem? ideas?
the cars a 99 S standard turbo, with 59000m on the clock
Old 05 August 2003, 06:19 PM
  #3  
scoobyboy
Scooby Regular
 
scoobyboy's Avatar
 
Join Date: Nov 2001
Location: uk
Posts: 3,409
Likes: 0
Received 0 Likes on 0 Posts
Post

i wouldn't thought it would knock more like make the vehicle crab as it turns. itf it was wound up jacking a wheel would release it and it would turn ok for a bit until it wound up again admitidly it would do this quite quick. sounds more like a front driveshaft to me
Old 05 August 2003, 07:53 PM
  #4  
Mortywrx
Scooby Regular
 
Mortywrx's Avatar
 
Join Date: Jun 2003
Posts: 684
Likes: 0
Received 0 Likes on 0 Posts
Post

I had this problem knocking from the front thought it may have been the drive shaft, so got some wrx shafts and changed them and bingo....

Darren
Old 07 August 2003, 05:22 AM
  #5  
submannz
Scooby Regular
 
submannz's Avatar
 
Join Date: Jul 2001
Posts: 799
Likes: 0
Received 0 Likes on 0 Posts
Post

Yep if your Centre diff is making that sort of noise it is trying to get out of your transfer case. Highly unlikely
Old 07 August 2003, 07:31 PM
  #6  
Bob Rawle
Ecu Specialist
 
Bob Rawle's Avatar
 
Join Date: Mar 1999
Location: Swindon
Posts: 3,938
Likes: 0
Received 1 Like on 1 Post
Post

Actually its correct, the viscous drive transmits to the rear wheels, the centre diff across the fronts, I have the same problem on my STi5 and will need to be replaced asap, when cold no problem, when hot the car locks itself on slow speed turns and the fronts "jump" as they slip.

cheers

bob
Old 09 August 2003, 08:33 AM
  #7  
submannz
Scooby Regular
 
submannz's Avatar
 
Join Date: Jul 2001
Posts: 799
Likes: 0
Received 0 Likes on 0 Posts
Post

9 time out of ten worn centre diff would cause too much slippage causing a funny scraping sort of sound rather than knocking or clunking
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
KAS35RSTI
Subaru
27
04 November 2021 07:12 PM
Frizzle-Dee
Essex Subaru Owners Club
13
09 March 2019 07:35 PM
slimwiltaz
General Technical
20
09 October 2015 07:40 PM
legb4rsk
Non Scooby Related
14
01 October 2015 05:18 AM
Phil3822
General Technical
0
30 September 2015 06:29 PM



Quick Reply: viscous coupling



All times are GMT +1. The time now is 01:33 PM.