Transmission puzzle - AudiForums.com



B5 Models Please discuss all 1996 - 2001 B5 A4 topics here...

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-13-2018, 04:02 AM
1st Gear
Thread Starter
 
Join Date: Jul 2018
Posts: 2
Default Transmission puzzle

Hi guys hoping someone can point me in the right direction.
Car is 1781cc petrol auto dmu gearbox think its 01n.
Before changing the transmission atf and filter the car was reluctant to engage the torque converter clutch tcc in 4th gear. Accelerate in 3rd to over 50mph would get it to engage when switched into drive- maybe a scream but clunk and bingo would drive on motorway for ever it seems.
Now after changing atf and filter (correct spec) tcc will not engage in 4th gear at all.
symptoms - seems like the torque converter can freewheel. If i take my foot off the throttle in 4th engine revs go to tickover but the speed can accelerate downhill !. If I do the same in third gear at high revs I get engine braking. In D in 4th the power is delivered by the torque converter fluid coupling not direct drive at all speeds.
Vag com code 01192 is thrown possible causes are suggested to be ttc malfunction,valve n94 defective,electric connections.

My puzzle is the tcc will work in other gears but not 4th - maybe I am wrong but the tcc seems ok mechanically so what other inputs code cause it to behave like this ? From reading 01m service manual (cannot find 01n) n94 solenoid is used in third and fourth gears. The electrical connections function to work n94 solenoid as there are no problems in 3rd gear. Anyone have a clue please.

Last edited by welshboy; 07-13-2018 at 04:13 AM. Reason: correction
Reply With Quote
  #2  
Old 07-14-2018, 01:31 PM
1st Gear
Thread Starter
 
Join Date: Jul 2018
Posts: 2
Default

Update - not only do I have a tcc problem but a slipping clutch problem. By that I mean at around 40mph to 50mph 4th gear slipping seems to be very responsive to the throttle load. I feather the throttle to stop it. The interesting thing I found today on a 200 mile drive is that once over 60mph this 4th gear slipping disappears making me think it may be a ATF pressure problem caused by restricted valve or pathway taking time to generate enough oil and pressure to apply the gearbox clutch properly in 4th. Whether this affects the TCC is a puzzle, Tcc in 4th did not engage today .

Last edited by welshboy; 07-14-2018 at 01:34 PM.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Quattro puzzle-disappointment! nemohm Audi A6 10 12-29-2008 04:17 PM
Interesting puzzle/query grover Audi A3 6 04-18-2008 10:58 AM
A piece of my exhaust puzzle wood_e Audi A4 14 11-28-2006 08:31 PM
Puzzle...... Bantanic Off Topic 3 04-21-2006 08:55 PM
Audi 80 Brakes Puzzle Bryan Cheer All Other Audi Models 4 05-05-2005 08:58 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Advertising
Featured Sponsors

All times are GMT -4. The time now is 10:54 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.