Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: RichardB on 19 January 2007, 17:52:31

Title: What were changes to post '97 AR25 auto gearbox?
Post by: RichardB on 19 January 2007, 17:52:31
Hello

Can anyone help with this?

I need to replace the auto gearbox on my '94 car and have the chance of getting a very low mileage one off a '99 car.

With the minor facelift in '97 came some changes to the gearbox.

Does anyone know what the changes were?

Were there big changes e.g. the mapping of the gearbox ECU would not match up with the engine ECU?

Or were the changes so minor I could swap bits over from old box to the new one?

Both cars are 2.5 litre petrol.
Title: Re: What were changes to post '97 AR25 auto gearbo
Post by: Admin on 19 January 2007, 21:22:23
To the best of my knowledge, the modifications were purely software based.

The mechanicals should be the same, so it should be straightforward ( ::)) enough.

For ease, change the complete gearbox, do not try and swap parts over.

The sofware changes will not affect the engine ECU, which is totally seperate.

Good luck! :)
Title: Re: What were changes to post '97 AR25 auto gearbo
Post by: RichardB on 19 January 2007, 21:43:49
Thank you.  Much appreciated.
Title: Re: What were changes to post '97 AR25 auto gearbo
Post by: RichardB on 19 January 2007, 22:17:09
Will the speedo on the new 'box match the older one?
Title: Re: What were changes to post '97 AR25 auto gearbo
Post by: TheBoy on 19 January 2007, 22:22:37
Quote
Will the speedo on the new 'box match the older one?
speedo signal does not come from g/box - comes from abs ecu...
Title: Re: What were changes to post '97 AR25 auto gearbo
Post by: RichardB on 19 January 2007, 23:29:25
Brilliant.  You Administrator fellas seem to really know your stuff on Omegas. :)
Title: Re: What were changes to post '97 AR25 auto gearbo
Post by: Admin on 20 January 2007, 09:19:20
Quote
Brilliant.  You Administrator fellas seem to really know your stuff on Omegas. :)

Thank you. We just about know our way round them!  ;)

But just wait until you come across Marks DTM, now he knows these cars!!  8-)