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Thread: my A4 wont down shift. Why
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03-26-2012, 03:50 PM #1Member
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Red- 1999 Camaro SS(LS6 Swap)
my A4 wont down shift. Why
hey guys just did a tb and intake swap to 101mm and i dont know if it has anything to do with it but my car wont down shift at any speed it just goes in whatever gear its in? what could be the cause? any help thx
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03-26-2012, 05:13 PM #2Former Mopar Man
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Silver & Blue- 02 Camaro SS, 04 GTO
Check the cable going to the trans for downshifting
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03-26-2012, 05:47 PM #3Veteran
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Black & Blue- '02 WS.6 / '07 Suburban
Shifting is in part controlled by readings from the Throttle Position Sensor (TPS). Is this still hooked up and working properly after your swap?
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03-26-2012, 06:00 PM #4Member
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Pewter Silver- 2002 Trans AM WS6
I think Keith and Jeff have it nailed. I would guess a cable not reconnected and not noticed.
Just curious, can you shift it manually up or down?.
Please post your findings.Magnaflow Quad Tip, Lid, SBellow
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03-27-2012, 04:59 AM #5Member
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Red- 1999 Camaro SS(LS6 Swap)
I need to check the cable from the. trans then but I have replaced 3tps and no change! I can shift it myself though
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03-27-2012, 07:31 AM #6Veteran
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Black & Blue- '02 WS.6 / '07 Suburban
The 4L60E does not have a TVS cable -- the only cable runs from the shifter to the driver side of the transmission. If that cable is properly adjusted, you should be able to feel the detent for each gear. Do you have access to a scanner that you can see the TPS output on?
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03-27-2012, 08:35 AM #7Veteran
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98 Formula- 06 duramax
my guess is that your throttle cable needs adjusted (most likely) or you're throttle stop is set to shallow or deep(least likely)......you can either log it if you have access and see what % is showing when you go WOT, you can put a volt meter on it and see if you get ~4.65 volts WOT, or you can probably just look in there and have someone put the pedal on the floor and see if the blade is opening all the way. I'm betting with the new TB the cable needs adjusted to open the butterfly further.
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03-27-2012, 08:37 AM #8Veteran
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98 Formula- 06 duramax
right....you can rule the tranny out of the equation pretty much.
Originally Posted by pajeff02
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