my transmission wont shift untill its almost red lined 89 jeep charokee?

Answer 1

I would bet it's the Trans control module, very common for that to have issues........

Answer 2

Here Is Something Simple And Easy To Suggest To You. Ever Think Of Checking The Tranny Fluid Or Even The Gear Box Fluid ? It Might Be Something That Simple . If Not Then Start Looking For A New Tranny Or New Ride Cause Its Going To Be Expensive

Answer 3

check for frozen kick down cable other possibilities are throttle position sensor [this is a duel unit and is adjustable the easiest way to properly adjust is to use a scan tool's live data stream. the last is output shaft speed sensor it is a on/off type switching device meter readings are [harness side] 5 volts. [sensor side] using ohmmeter continuity/ open as the output shaft is turned slowly by hand [vehicle must be securly jacked and blocked for this test]

Answer 4

does it ever get serviced?
does it only do it when hot? or cold? or all the time?
does it happen at part, minimal or wide open throttle?
could be a rooted transmission (if its an auto), or a plonker of a driver (if its a manual)
could be ecu issues and problems
could be the kickdown cable
could be wheel spin

without more info this is akin to divining the lotto numbers from the entrails of a goose, impossible

Answer 5

verify fuses, verify vacuum, wires to transmission, and linkage. i think of that transmission has a velocity sensor on it. i do no longer be conscious of a thank you to envision it because of the fact that I somewhat have been no longer able to get any information on the fee sensors. stable success