***************UPDATE*******************
Firstly apologies for late response been out the country for a while....!
My gearbox issue has been resolved, and just for reference I thought it would only be couteous and beneficial to others in forum should they have sinilar problems.......so here it goes...!
First and formost I change the GEARBOX OIL, FILTER as suggested, no joy.
I was then prompted (From Forum) to look into gearbox selector switch etc.
I took car to a very reputable gearbox specialist In PERIVALE, LONDON. NUDGEMATICS.
Believe it or not he'd diagnosed the fault, over a phone call
What he said was the issue would be nost certainly the gearbox solenoid, as this was a common fault in the OMEGA's.
After a short spin he'd diagnosed it was the SOLENOID that changes from gear 2-3 (apparently very common).
GEARBOX solenoid changed for a very reasonable price....!
Problem solved......!
We have one very happy OMEGA DRIVER AGAIN......!
Hope it helps should anyone have the same, or similar issue....!
Big thanks to you guys for your help.......!
Car was hooked upto the machine, and