1990 Jeep Cherokee Ltd.

Help! I have a 1990 Jeep Cherokee Ltd. 6 cyl, 4WD. About a month ago the vehicle started to shift up and down indiscriminately. When I drive the vehicle between 25-35 mph it would shift down, rev. the engine, then shift up only to shift down again immediately. When I drive the car from a standing start and "put my foot into it" it shifts up through the gears smoothly and positively. Once I get into high gear at around 40-45 mph it runs smoothly with no down-shifting. I took the vehicle to a "transmission specialist" (you'll know the name), After completely rebuilding my automatic transmission to the tune of $1600.00 I have a transmission that does exactly the same as before it was rebuilt (It appears as if I didn't need to have the transmission rebuilt). Someone told me that it may be computer/electronic related like the fuel sensor? I do not want to take it back to the Transmission place without first knowing what the problem is exactly! Any suggestions as to what may be the cause of this? Thanks

Reply to
polyboat
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Reply to
L.W.(Bill) Hughes III

I have had shift problems similiar to yours with my 90 XJ. First clean clean both plugs that go to the throttle body with contact cleaner, The square one goes to the throttle position sensor. Also clean the two larger plugs that are close to the transmission dipstick, they go from the transmission controler to the tranny. If that doesn't work replace the TPS, costs about fifty bucks and is an easy fix.

J Kennedy

Reply to
JRK58

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