Hello everyone,

I have a question and hoping someone can help me with it. I have a 2000 grand cherokee 4.0L 2 Wheel Drive with a little over 200k miles and recently I started to have some shifting issues. Not sure if it is a transmission issue or possibly a faulty Governor Pressure Solenoid/Sensor, but I started to have issues with slipping or having a difficult time getting to 1st and 2nd gear, the RPMs were hitting 2500 before shifting, however, I did not have any issues with 3rd and 4th gear.

I decided to do a transmission oil tune-up and replaced the oil filter, governor, pressure sensor, and output speed sensor and that seemed to do the job but now it won't shift 3rd or 4th. I drove the jeep on the freeway over 50-60 miles and RPM's were going over 3500 and did not notice any shift to 3rd or 4th. I looked around the web and found that possibly it could be a faulty output speed sensor, so I replaced it with the original one and that seemed to do the job. Now the issue that I get is that at random times I get shifting issues with 1st gear then 3rd and 4th,.  Do you think it could possibly be a faulty Governor and or pressure sensor? I hate to want to remove the oil pan and replace those parts again but if that is the issue I don't mind at all. Please, anyone, I would greatly appreciate your help. If I am not explaining correctly please let me know and I can try to rephrase my work. 

FYI I have put Lucas Transmission oil and the same thing.

Thank you all

Jorge