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I have taken my Omega for tech2 tests but they can't find anything wrong, but I don't think the box should be changing as aften as it does. ie if going up a slight incline @45>50mph the revs keep jumping from 1500 to 2000 and back again untill I give more trottle, then if cruise @70mph the auto is not locked up because on a slight hill you have to give a bit more throttle the revs will drop from around 2500 to 2200 and then as you go over the brow and ease off the revs go back up from 2200 to 2500. This is the exact opposite of what I would expect. Other than this it is smooth and correct when changing. Has anyone else experianced this and more to the point know how to cure it, as I have had no joy with Vauxhall Motors Uk. They say that their technical department are not Particularly concerned by the description and if the tech2 test did not find a fault, then basically there wasn't one.
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I'm sorry, the Omega is still a rare animal here, so I cannot give specifics.
"Hunting" gearboxes are a pain in the a**e, and can lead to premature failures.
I've just had my astra in, for an "arm and a leg" new set of switchgear - they say the old one failed due to constant the 2nd to third to 2nd changes at commuter speeds... and have adjusted the new one accordingly.
If Vauxhall aren't happy to assist, maybe contact an independent gearbox specialist for an assessment, and maybe an adjustment to the gear-changing "window".
HTH
ian ct
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It sound like it's the torqy converter lock-up mechanism, which is usually a pressure sensor and solenoid. Take a look at the FAQ's and speak to one of the transmission specialists.
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Where do you live? In the the south you could try DK cars in Thatcham - they specialise in Omegas and their service is very good.
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There is a recommendation for an auto box guy in HJ's scratchpad - he's been spoken of highly a couple of times.
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I had the same symptoms on a Scorpio. The specialist said that an oil and filter change might work. Cost about £70. 20k miles later never had a problem
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Les
I run a 2.5td Estate and can only describe the gearbox as 'wooly'. It will catch top at 50mph but any incline and it will change down. I would have expected that with such a large engine and bags of torque it would be able to hold top. Certainly with a manual box there would be less changing up and down.
I use mine for ocassional towing and had a oil cooler fittted. Each time I towed to the south of England it was fine but on each return journey I noticed that it wouldn't hold top unless on a decline. Result - overheating and more fuel consumption. I have spoken to a local specialist and he says the box really needs to be out, stripped and inspected. Total cost about £600. And I know he is not a leg lifter.
Andrew
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