Notices
Drivetrain Gearbox, Diffs & Driveshafts etc

Gearchange problem

Thread Tools
 
Search this Thread
 
Old Mar 26, 2002 | 05:47 PM
  #1  
blip's Avatar
blip
Thread Starter
Scooby Regular
 
Joined: Jan 2002
Posts: 495
Likes: 0
Post

When I am travelling in fourth gear and I want to drop it into third, to overtake/accelerate or when braking into a corner, the gearchange is quite obstructive, and sometimes crunches or just wont let me in!

This happens when the engine speed is fairly high, so for example i am travelling in 4th at 3500rpm, and by dropping into 3rd the revs will rise to say 4500rpm.

Is this the synchro (i don't know much about this) or the gear selector? Am i looking at a new box and big bucks??
Reply
Old Mar 26, 2002 | 09:25 PM
  #2  
Steve Whitehorn's Avatar
Steve Whitehorn
Scooby Regular
iTrader: (13)
 
Joined: Jan 2002
Posts: 4,036
Likes: 20
From: Kent
Post

I had similar problems changing from 4 to 5. I put it down to poorer synchromesh on earlier cars (94WRX). After a few months the gearbox developed a bad whining. However suprisingly not a new box required but just one bearing. New bearing and v-good gear box oil now it is sound. Hope this helps a little.
Cheers
Steve
Reply
Old Mar 27, 2002 | 09:18 AM
  #3  
FiveO's Avatar
FiveO
Scooby Regular
 
Joined: Jan 2002
Posts: 314
Likes: 0
Talking

blip,

You need to 'blip' the throttle! Double-de-clutch or heel and toe to match engine speed to revs in the lower gear.
Reply
Old Mar 27, 2002 | 06:03 PM
  #4  
Dyney's Avatar
Dyney
Scooby Regular
 
Joined: Jan 2001
Posts: 6,812
Likes: 1
From: West Sussex
Unhappy

Steve,
How much did it cost to replace the bearing? Mine's been whineing for a while now

Iain.
Reply
Old Mar 27, 2002 | 08:18 PM
  #5  
Paul_G's Avatar
Paul_G
Scooby Regular
 
Joined: Feb 2002
Posts: 50
Likes: 0
Post

My P1 does the same whines, and changing from 4th to 5th under heavy load, the damn thing crunches every time, but only when doing about 100mph (found this out on the track of course).

[Edited by Paul_G - 3/27/2002 8:19:38 PM]
Reply
Old Mar 28, 2002 | 07:57 AM
  #6  
AlanG's Avatar
AlanG
Scooby Regular
 
Joined: Jul 2000
Posts: 3,040
Likes: 0
From: Glasgow
Post

99MY year gearboxes (UK) had problems with the synchro cones. One of the symptoms shown was a crunching between gears which was highlighted if the vehicle had been run for a considerable period of time i.e. hot and /or long journeys.
This fault would not necessarily show up if the car was subjected to little use or short journeys.
Any box taken in under warranty now have modified synchro cones fitted to cure the fault.

A
Reply
Old Mar 28, 2002 | 01:18 PM
  #7  
Scott.T's Avatar
Scott.T
Scooby Regular
iTrader: (2)
 
Joined: Feb 2000
Posts: 6,181
Likes: 1
From: East Sussex
Post

Change the Oil fot Castrol Syntrax (cost about £40).
It sorted my Synchro's out and saved me having the box rebuilt.
As I'm sure Gearbox firm wouldn't of just returned the car stating "it was just the oil mate".....
Reply
Old Mar 28, 2002 | 10:45 PM
  #8  
JohnD's Avatar
JohnD
Scooby Regular
iTrader: (5)
 
Joined: Apr 2000
Posts: 6,252
Likes: 1
From: Havering, Essex
Talking

Scott is right. Syntrax cured my 4th to 5th crunching completly. Fully synthetic oil made it worse!
JohnD
Reply
Old Mar 31, 2002 | 02:46 PM
  #9  
blip's Avatar
blip
Thread Starter
Scooby Regular
 
Joined: Jan 2002
Posts: 495
Likes: 0
Post

Thanks for the advice I'll try using a different oil and see if it helps at all. Otherwise I'll just have to improve my heel'n'toe technique ;-)
Reply
Old Mar 31, 2002 | 09:57 PM
  #10  
Steve Whitehorn's Avatar
Steve Whitehorn
Scooby Regular
iTrader: (13)
 
Joined: Jan 2002
Posts: 4,036
Likes: 20
From: Kent
Thumbs up

Dyney
The bearing cost £45. But obviously labour costs can be quite steep, if you are unable to do it yourself.
Shell make a gearbox oil designed only for Subaru's and it is the dogs. This is what I now have running in my box.
Hope this helps
Steve

Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Abx
Subaru
22
Jan 9, 2016 05:42 PM
PetrolHeadKid
Driving Dynamics
10
Oct 5, 2015 05:19 PM
T.K
General Technical
10
Oct 2, 2015 11:35 AM
the shreksta
Other Marques
26
Oct 1, 2015 02:30 PM
minguela
Wheels And Tyres For Sale
0
Sep 29, 2015 11:28 AM




All times are GMT +1. The time now is 11:04 AM.