gear serching? ?
#1
gear serching? ?
I have a 99 cummins with a 2001 motor and auto tranny. The motor and tranny as well as the vp44 have 35000 miles on it. It also has a air dog 150 .. here is my problem... between 50 and 58 miles an hoir my truck surges or serches for what gear it needs to be in when its not under a load if i turn the over drive off it does it 10 miles an hour lower than when in over drive ... i have 35 inch tires and just got the spedo recalibrated before i had that done it would serch or surge for gears at 50 to 58 miles an hpur which in actual speed was 60 to 68 miles per hour. Now that the spedo is correct it is still at 50 to 58 miles an hour which is actual speed ... im lost!!! I hear tps i hear tpps i dont know where to go. Thanks for all the help Josh!
#3
#4
#6
That is an APPS relearn procedure. A reset will do you more good, followed by a relearn. Search for APPS reset, and you'll find a few procedures.
You can try a lock up switch to see if that eliminates it:
http://www.tstproducts.com/Torque%20...p%20Switch.pdf
If your APPS is gone, Timbo is a popular unit.
You can try a lock up switch to see if that eliminates it:
http://www.tstproducts.com/Torque%20...p%20Switch.pdf
If your APPS is gone, Timbo is a popular unit.
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