allison stuck in 1st gear

icemannm

New member
Apr 13, 2013
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i was driving 55mph slowed to about30mph to make a turn tranny downshifted to 3rd and would not upshift came to a stop now tranny stuck in1st gear code was for speed sensor circuit malfunction found both wires broken at speed sensor on tailshaft fixed those other speed sensor wires test ok tranny still wont shift how can u tell if tcm is bad

thanks Tony
 

Awenta

Active member
Sep 28, 2014
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CT
What did you read the code with? Make sure the speed sensor wires are twisted tight. If you fixed them straight then it won't work.

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icemannm

New member
Apr 13, 2013
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i am heading to my buddys shop now to clear codes after twisting sensor wires its now in limp mode 3rd gear
 

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
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Fullerton CA
If it still has a problem; get the code numbers in sequence as they came out. It makes a difference.