stalling jerking

i have a 89 cherokee 4wd automatic 4.0L the transmission feels like it is about to fall out after i drive it for 15-20min the temp guage reads 190. oil pressure fine. you can put in neutral and cut off restart it put in drive runs fine for 2-3 minutes then starts all over with the jerking, loss of power, and won't get over 30 mph. im thinking it is a sensor because you can cut off and restart and runs fine, but which one? any help would be appreciated!

Crankshaft position sensor. Do a search in this forum. My transmission also shifted around crazily a couple times before I replaced the sensor.

thanks ill give it a try!

put a new crankshaft position sensor on still same thing, took out thermostat thinking possibly overheating, still same thing, trans fluid changed still same thing and in neutral. any suggestions?

Hmmm...odd...throttle position sensor maybe?

thanks ill give a try, any other suggestions

Hmmm...odd...throttle position sensor maybe?

I'll second that.

Here is a post that you might check for a download on information on the TPS:

http://www.dua1.com/AdminFiles/Jeep/88/TPS_CPS_testing.pdf

tried tps sensor, fuel injection svc., anybody think it might be trans module or computer? this is getting anoying