I have an omega 2.02 cd auto. recently developed problem with gearbox, when driving car gearbox gives a bump then loses power.automatic gearbox warning comes up on dashboard,can put it into manual and drive ok. I turn off the engine then turn it back on and problem has gone.        mechanic said i need a gearbox and quoted £1000 for the job. Any advice would be welcome.

Symptomatic of low ATF. First thing would be to check ATF level and ideally a fluid & filter change.

cheers,i,ll try that.

As RobG says. There is a guide for checking the level properly  in the Maintenance guides. Auto Gearbox oil should be changed every approx 70,000 miles - more frequently if towing a lot. It gets overlooked and there isn't a drain plug. Again if it needs doing there is a maintenance guide for that as well. 

car has just passed M.O.T now i can solve gearbox problem. can anyone tell me best place to get filter and oil and the gaskets for the job.many thanks. 

i tryed to order new filter from vauxhall and was told they dont do them anymore. discontinued product.

Try JPAT:

http://www.omegaowners.com/forum/YaBB.pl?num=1223285402

:y

Or just wash the old filter out.

And worst case scenario I an get a good second hand gearbox to you for about £100 complete with torque converter and delivery costs...£1000, the guy has to be having a laugh!

many thanks for the replies, now i'm wondering whats best and easiest,stripping out and fitting new filter or fitting second hand box my car is 2.2 petrol cd auto 2000.i live 23 miles west of glasgow what kind of delivery cost are we talking.
                                                            

ATF service first, box swap last resort.

All you need to do is remove the sump from the bottom of the gearbox then replace the filters and fill up with fluid once its back on...worth doing first as worst case scenario you could re-use the filters and probably most of the fluid and you would more than likely need to change both on the replacement second hand box anyway...

Courier of a gearbox on a pallet to Glasgow will of course to a degree depend on distance...from here probably about £50-60...

  thanks for prompt replies,i will source parts now try to change filters, wish me luck i have never done anything like this before.i'll try and follow the maintenance instructions and let you how i get on

Its an easy enough job even for a beginner, just bear in mind that it will be very messy when you remove the sump...have something if not a lot of something underneath the gearbox sump ready for when you have removed it...and try not to get a lot of it on you...old gearbox oil is very messy and STINKS! And the smell stays around for weeks...wear really old clothes and chuck them if it gets on them...gets in your washing mahing too otherwise...I really cannot stress this enough lol

thanks for the advice,i'll order the parts from jpat: tomorrow and set it up for the weekend. my wife said if it's that dirty i've to strip off outside and she will hose me down.lol

parts from jordered,whats the best fluid to use,i'm not caring about cost as i don't want mess it up useing cheap oil. parts from jpat great price thanks for the info;

most of us favour fuchs titan 4000 (from opie oils)

job done followed instructions,now i'll drive round  for a while to see if it solves the problem.many thanks for all your help. i'll let you know how it goes. fantastic forum guys.