Automatic Transmission May Not Shift Correctly at High Mileages on Toyota T100

At higher mileages, (125,000-150,000) the automatic transmission may not shift correctly. This can be caused by the throttle position sensor being out of adjustment or a shift solenoid needing to be replaced. Typically the transmission does not need to be completely overhauled.

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Average mileage: 167,505 (117,000–290,000)
Drive Trains affected: 2WD, 4WD
6 model years affected: 1993, 1994, 1995, 1996, more1997, 1998
18 people reported this problem
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problem details
1995 Toyota T100 - 2WD 117,000 mi,
Doesn't shift from 2nd to 3rd when cold. When engine temp is on the way up to normal, it will shift. A 2 minute warm up usually works. Also shifting onto OD doesn't usually happen until 55 MPH, even when driven for 10 miles or more. Letting off the gas at 50-53 MPH will sometimes allow it to shift but not always.
1997 Toyota T100 - 4WD 280,000 mi,
when my Toyota t100 is cold it shifts fine once it warms up it doesn't want to go past in the 3rd and overdrive I can you give me some things to look for
HIGH RPM AT LOW AND HIGHWAY SPEEDS. I WAS TOLD THAT IT COULD BE SHIFT REGULATOR? THIS PART IS INSIDE THE TRANSMISSION AND MAY COST ANYWHERE FROM $369.00 TO $ 700.00 AND THE INSALLATIONMAY COST FROM $1500.00 TO $2500.00. I GET AROUND 9 TO 12 MPG AND THAT HIGHWAY OR CITY
1997 Toyota T100 - 4WD 118,000 mi,
doesnt upshift, have to throttle shift to higher gear. not repaired
1997 Toyota T100 - 4WD 129,500 mi,
Unable to shift to 1st gear.Shift solenoid needs to replace.
most the time i break i here a sqeez noise.
1997 Toyota T100 - 2WD 149,600 mi,
Transmission fails to shift properly at the 2-3 shift when cold. Called toyota and they have informned me it is normal. this process is to get the A/T fluid up to temp