Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Auto Addict on 11 November 2011, 07:28:31
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Happens after ascending a steep hill, and stopping at the T junction at the top.
If I turn left, auto box is reluctant to change out of first.
If I turn right, auto box changes normally.
ATF has been changed, Tech II'd with the latest software.
Same thing used to happen on my old 2.2, until ECU was changed under warranty.
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Sounds like G/box oil could need a top up.
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Sounds like G/box oil could need a top up.
Nope, fully topped up.
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Sounds like G/box oil could need a top up.
Nope, fully topped up.
Odd, seems strange that which way you leave a junction should affect the change up point.
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Sounds like G/box oil could need a top up.
Nope, fully topped up.
Odd, seems strange that which way you leave a junction should affect the change up point.
Used to happen on the same junction with my 2.2 :(
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So a higher shift point! Like it's in sport mode? Or just won't change?
Is the left turn further up hill?
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Very odd. Mine does this always at the same junction, uphill T but I turn right. The road is congested after the turn so a light foot required - often take up to 3k before changing. Better if in D rather than say 2nd but always at this junction.
G/B filter & oil changed but made no difference at all !
- Assumed my box being less than perfect :-X
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So a higher shift point! Like it's in sport mode? Or just won't change?
Is the left turn further up hill?
Just won't change.
Left turn has a slight downhill gradient.
Right turn is flat.
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Very odd. Mine does this always at the same junction, uphill T but I turn right. The road is congested after the turn so a light foot required - often take up to 3k before changing. Better if in D rather than say 2nd but always at this junction.
G/B filter & oil changed but made no difference at all !
- Assumed my box being less than perfect :-X
3k being the shift point from cold...?
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AA. Spookey - this right turn is slightly downhill too !
Chris - yes, although this is when warm/hot.
I assumed it was my light right foot confusing it, but now and again the road is clear and even under a lightly spirited pull away the shift point is high than I'd expect.
I would even belive if I later found there was something electronic interferring with the car at that particular junction.
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Very odd. Mine does this always at the same junction, uphill T but I turn right. The road is congested after the turn so a light foot required - often take up to 3k before changing. Better if in D rather than say 2nd but always at this junction.
G/B filter & oil changed but made no difference at all !
- Assumed my box being less than perfect :-X
3k being the shift point from cold...?
No, engine hot.
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Has anyone got any info on this on TIS?
Just a thought, as the dealer changed the ECU on my old 2.2, and cured the fault.
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got the exact same problem with my 2.2 auto,go up hill,stop on a slight uphill gradient to turn right onto a slight downhill gradient and the box will not change gear when going down hill.had new filter and fluid in the box,didnt make any difference to the box at all..i use the S button now on that particular road,and the gearbox changes gear lovely. :)
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Odd, Try a different route. . . ! ::)
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It's just a specific set of circumstances causing the box to do something you don't expect, IMHO. I.e. it's detecting a gradient and remaining in a low gear to give you engine braking.
The gearbox changes gear when the ECU tells it to. If it doesn't change, you get a fault code straight away, so I doubt it's a mechanical problem of any kind.
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Wonder if the ecu thinks the engine is cold? Or some other minor input that it's not seeing, in order to make the right decisions...? certainly on mine, cold starts and the first 400 yards it revs to 3k is reached. Or sport mode or snow mode are pressed.
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Yes, it's strange, when the ECU was changed by the dealer on my 2.2, the problem was solved, that's why I wondered if there was a technical bulletin on the subject.
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Tried an experiment today, put it in sports mode at the bottom of the hill, stopped at the T junction, turned left, gearbox box changed up much more smoothly, didn't hold 1st gear.
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Have you cleaned the selector switch on your gearbox? My car is slightly sticky in 2nd gear, worse when cold but hit and miss when hot, perfect gear changes in S mode, but never paid any attention to what direction I turn. My mate and I changed the gearbox filter, fluid gaskets and thoroughly cleaned the sumps out and this made a hell of a difference and my gearbox ECU isn't updated, but never got round to cleaning the gear selector switch. If you haven't tried this and decide to try it, please let us know the outcome. Cheers. HTH :)
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There is no communication between the steering system and the geatbox ECU (other than a shared speed signal on V6 - that wasn't present on 2.2), so it has to be purely engine loading/speed/gradient/temp related.
With your 2.2, if this was around the 'a strange thing happened in the carpark' threads, I think we all agree your dealer had no idea.
Pretty certain I have a spare GS8211 ECU here, but will guarantee you it will make precisely sod all difference if its running the same software/map ;)
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There is no communication between the steering system and the geatbox ECU (other than a shared speed signal on V6 - that wasn't present on 2.2), so it has to be purely engine loading/speed/gradient/temp related.
With your 2.2, if this was around the 'a strange thing happened in the carpark' threads, I think we all agree your dealer had no idea.
Pretty certain I have a spare GS8211 ECU here, but will guarantee you it will make precisely sod all difference if its running the same software/map ;)
Yeah, your probably right :(