While you wait for answers, we may have found some information which could help you.
Click here for Gear Box Faultomega starter motor replacement?
oil into plugs vaxuall omega 2.5?
Automatic gearbox not changing gear?
how and where do i get 02 sensor ?
Heater not working Omega 2001 auto 2.2 petrol?
why is my 3ltr omega overheating? ?