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Author Topic: Strange Auto Box behavior.  (Read 4071 times)

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feeutfo

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Re: Strange Auto Box behavior.
« Reply #15 on: 12 November 2011, 00:40:54 »
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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Re: Strange Auto Box behavior.
« Reply #16 on: 12 November 2011, 07:55:17 »
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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Re: Strange Auto Box behavior.
« Reply #17 on: 12 November 2011, 17:31:31 »
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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car-nut

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Re: Strange Auto Box behavior.
« Reply #18 on: 13 November 2011, 00:13:48 »
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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TheBoy

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Re: Strange Auto Box behavior.
« Reply #19 on: 13 November 2011, 10:30:27 »
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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Re: Strange Auto Box behavior.
« Reply #20 on: 13 November 2011, 10:53:40 »
Quote from: TheBoy on 13 November 2011, 10:30:27
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 :(
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