Shift selection problem on AT

Discussion in 'General Technical Discussion' started by Esoteric, Aug 17, 2007.

  1. Esoteric

    Esoteric Leaving Skid Marks

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    On the way to work this evening in heavy stop-start Auckland traffic, I encountered a shift selection problem whilst attempt to shift from 2 to 3 in tiptronic mode. I tried several times whilst backing off, without success... slipped into D and which then selected 4.

    Was doing about 2800rpm at the time and had done a trip distance to that point of approximately 12km. It is the first this has happened

    Once i had joined a road with no traffic and had an open road the same shift 2 to 3 was executed as normal and appeared back to normal with another 10km till I arrived at my destination.

    The ambient temperature was about 12oC and am wondering if this is symptomatic of an overheating AT, confused transmission or something more sinister like death?

    (I have done about 500km since my last ATF flush / replacement).
     
  2. bradc

    bradc 1 AYC Bar

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    It may be something to do with the fact you've only done 500km since the flush and the trans is still learning things. I've never encountered that before, but it does sound a bit strange. Any more problems like that though and I would sell the car :)
     
  3. BuzzPuppy

    BuzzPuppy OZVR4 Ambassador Lifetime Member

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    I'm assuming that it's the correct service fluid as well that they've put in?
     
  4. blakamin

    blakamin Guest

    To me :D
     
  5. Esoteric

    Esoteric Leaving Skid Marks

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    Yup - the standard issue MMC stuff (haven't got the goodie in front of me think it was MSP III or something)

    I checked the fluid level once I got home this morning and it was fine - the dipstick had a thick film of ATF when warm.

    On the way to work this evening, no traffic - no problems since, the shifts are completed on command, like normal.

    I've a feeling that you may be right Brad and that it's just confused - but as you say... any more problems and Blakamin could have a new car ;)

     
  6. bradc

    bradc 1 AYC Bar

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  7. blakamin

    blakamin Guest

    I been watching... and then I saw the price..... swap you for 2 mercs!:D
     
  8. bradc

    bradc 1 AYC Bar

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    I'd sell it for $6000 to someone that I know, $7000 to someone I don't.

    The only cars I will accept as a trade are:

    Eleanor
    early 69-71 Corvette
    BMW 850
    Audi RS6
    Last Gen Mazda RX-7
    Honda NSX
    R34 GT-R

    :D
     
  9. hawks

    hawks Leaving Skid Marks

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    ^ lol sounds realistic :D
     
  10. blakamin

    blakamin Guest

    I'm out then...:(
     
  11. Esoteric

    Esoteric Leaving Skid Marks

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    Saw a good specimen of a BMW 850i in Mission Bay yesterday morning. The only thing that let it down was its gold wheels (the car was maroon).

     
  12. Esoteric

    Esoteric Leaving Skid Marks

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    ***UPDATE ON TRANSMISSION***

    Was driving up and down Auckland yesterday, NW - Northern and Southern and picked up no problems with the transmission at all. Every shift was executed properly.

    I think that when it's at its correct operating temperature it really does well.
     

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