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help! trans will not shift

This is a discussion on help! trans will not shift within the General Help forums, part of the LSx Technical Help Section category; i just up graded my stall from a 3600 to a 4000, now my speedometer will not work and my ...

  1. #1
    Member 35thz28camaro's Avatar
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    2002 z28 camaro

    help! trans will not shift

    i just up graded my stall from a 3600 to a 4000, now my speedometer will not work and my trans will not shift! i have checked the big conn on the side of the trans and the small one on the tail shaft about 3 times. and i check all the fuses. need help asap, please!

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    Senior Member Orcus79's Avatar
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    umm why such inane stall speed? What mods are done to the car, for stall that high you would need some serious work under the hood and really steep gearing.

    My, unedcated guess is that the stall speed is just to high for the tranny to work right. Other wise check all the wiring front to back for pinched wires. If all else fails put your old stall back in and see what happens.

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    Member 35thz28camaro's Avatar
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    mods in sig

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    Senior Member Orcus79's Avatar
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    Well, I still think that for mods given a 4000 stall is bit high given the mods you have are a bit high, but thats just me.

    I think the first place to start would be to check line pressure and make sure your pump is still working, if that seems fine and all electrics check out then something inside let go. Stock tranny? Running a aux cooler?

    If running a stock tranny with no cooler with that stall, you most likely cooked it pretty good on the inside.

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    Member 35thz28camaro's Avatar
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    i have a b&m trans cooler, i was told that i need to start with the speedometer, because if the vss is not working then it wont let the trans shift, the vss looks ok, i have checked the wires and dont see any problems there, i have been trying the find a wire diagram for the vss to the speedometer? any help?

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    Senior Member Orcus79's Avatar
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    I do but no way to post them up. How ever I do have somethings for you to check get a multi meter and measure the ohm readings between the pins (1377-3355 ohms) if that checks out, block on wheel from turning and spin the other, should get an AC voltage reading of 0.5V or so.

    Going off what the 2000 manual says.

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    Member 35thz28camaro's Avatar
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    it was the vss sensor i replaced it now every thing works! thanks!

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