Omega Auto Gearbox Problem

Honest John Back Room » Technical matters
What is life like with your car? Let us know and win £500 in John Lewis vouchers | No thanks
View Threaded
Thu 24 Jul 2003 16:26
Omega Auto Gearbox Problem - Taters
I have an Omega 1994 2.5 V6 with auto gearbox which has the following fault.

The vehicle drives fine in normal drive mode,kicks down ok, changes up & down ok.

However if I put it in sports mode and accelerate with the pedal flat to the floor the box fails to change up and as it hits redline I get a warning light and the text " Automatic gearbox". The gearbox then goes into limp home mode. Once the engine has been turned off the gearbox is fine.

If I drive in the above manner but as I approach redline(or before) I lift of very very slightly the box changes up as normal. Also if I drive with a light throttle in sports everything is fine!

It's been into a main dealer that says it has a "code 41 - Hydraulic fault" when I told them it was a recon unit of only a month they then backed down saying they didn't know!

The garage from where I got the car from has had it back and adjusted the linkage but its still doing it!

Could it be a ECU fault or is it in fact the gearbox thats faulty.

Any other suggestions.

P.S. Anyone know what connections to jump to get to the gearbox fault codes?
Reply | Report as offensive | Link
Thu 24 Jul 2003 20:27
Omega Auto Gearbox Problem - Sooty Tailpipes
Try joining...

autos.groups.yahoo.com/group/omega_owners/

There is a PDF about repairing this box in the files section.
or you could post the question there.

Common problems are a wiring loom's rubber boot can break up and get stuck in the flow path of a solenoid, or an internal seal can fail, but that doesen't fit your symptom.

Good luck.
Reply | Report as offensive | Link
Sat 26 Jul 2003 01:21
Omega Auto Gearbox Problem - outkast
try, www.topbuzz1.carenthusiasts.co.uk/info/fault_codes...m this site tells you how to read the ecu with a paperclip,it may be of some help to you.
It might also be worth cleaning any elec connectors on the gearbox as dirt/corrosion can effect them.
Reply | Report as offensive | Link
Sat 26 Jul 2003 02:02
Omega Auto Gearbox Problem - Dynamic Dave
Unfortunately the info on the topbuzz website is for engine ecu fault codes, not gearbox ecu's.
Reply | Report as offensive | Link
Sat 9 Aug 2003 19:43
Omega Auto Gearbox Problem - stator
Try some one at www.fedauto.co.uk for advice
Reply | Report as offensive | Link

Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.

The Good Garage Guide