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Thread: '03 Signum V6 auto transmission problem

  1. #1
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    Question '03 Signum V6 auto transmission problem

    Hi all,
    I saw many posts on this forum, but I cant find problem like mine.
    My car has 55k (34k mi) km in it, what is real.
    This is an AF33 (aisin-warner AW55-50SN), what has two problem. May be the second is caused by the first, I dont know...

    1. if the oil (and the water) is in normal operating temperature, then almost all the time If I push the pedal to the metal -from stop- after the 2nd, before the 3rd the rpm goes up (3500-6500 depending the situation), then wait 2-3 sec the transmission put the 3rd speed. The shifting is very firmly. The shifting is never gummy or sticky all the speeds. The oil level and condition is good. At cold starts the problem doesnt appears. If I use light throttle, the problem doesnt appears.

    2. from 3rd to 4th, there are 2 lugs, after the shipping. I feel that the rpm is dropped -therefore it comes the 4th speed- but I feel the 2nd lug, I dont know why. All the other speeds are fine. The TCM and ECM softwares are have the newest softwares available.

    Today I tried to relearn the transmission again, but the 1st problem appears immediately. As I remember, under the relearn procedure the shifts are good, but just for 50 miles...after the 2nd problem is also appearing

    Any experience, opinion?

  2. #2
    Full Member Big Sig's Avatar
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    Firstly, check the condition of the fluid. After that I have no idea, sorry
    Now I need a turbo to keep up!

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    I think the fluid must be good, because there is no problem all the other speeds
    I forgot, there is no any fault code stored
    I drove already 200 miles after the learning and seems to be good, exept the first problem.

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