Hi everyone, obviously I haven't posted much, although I do read from time to time. Today I simply felt compelled to share a small "problem solved" in hopes that it might help someone else who experiences a similar issue.
I recently bought a 96 Cherokee. Long story short, it didn't run when I got it, so I got it running. First test drive, automatic transmission does not shift on its own. Using the lever to shift it manually, I had every gear except 2 because it wouldn't make the 1-2 upshift. Needless to say, starting out in 3rd and 4th can be problematic.
I immediately figured that I had an electronic issue. Scanned it quick, nothing to speak of. So I just went with my first guess, and went to the junk yard and got a TCU out of another 96. Cost $12. Plugged it in, and yes indeed that was the problem, all gears operating automatically as they should.
That was it, so I hope that helps at least one person, as it can be discouraging to throw throttle position sensors away, and lose sleep worrying about solenoids, etc. Thanks for reading.

 

Nice! I just actually asked about this. My cherokee is doing the same thing. Always nice to see people post back with success

 

Thanks for sharing... hopefully that can help some people. What trans was this?