RE: 97 Cherokee transmission service

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97 Cherokee transmission service

in automotive •  6 years ago 

Yes, fluid levels were good. Was driving it then all the sudden its like it wasnt downshiftin when put in drive. I stopped at a stop sign then when i went to take off it wouldnt go. Dropped it down into 1st 2nd and it went.

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Thanks for the symptom with what it was doing. I looked that up and is common on Jeep cause lots of people with a no downshift trans issue. You also need to check the TPS throttle position sensor for proper voltages with a voltmeter as this controls the tranny shifting. The TPS voltages are into the ECU not the TCU trans controller. Also found a few links you should read.
https://www.wranglerforum.com/f282/transmission-wont-downshift-help-817970.html
http://midsouthjeeps.com/forum/topic/260-automatic-transmission-wont-downshift/ this is about a plugged vent hole (plugged with mud)
https://www.jeepforum.com/forum/f310/won-t-downshift-stop-1201294/
governor pressure solenoid and sensor, under filter tray that you just did

So this is 3-4 more things to check. Lots of other people have had this problem too. good luck.