for quite some time now (months :O ) my transmission is not catching until 40, or 70mph, anything in between it revs way up to starting from about 1500 and going to 3500-4000+ until it shifts, and it only shifts at those two speeds. but at 40 and 70 it runs at normal rpms and seems fine, when it first started i took it in to have transmission fluid replaced..they told me it was just fine, ive tried stop slip, did not effect anything. and every so often when i come to a stop sign, and then reapply the gas the car keeps lurching forward as if it was running out of gas, violent jerking forward. the check engine light has been on the whole time too :S any suggestions? could be multiple problems...i have no idea, i have no knowledge what so ever about cars thanks for your help, any is appreciate

 

what year mod is the jeep? check grounds and have a tranny guy adjust the kick down cable

 

CEL is on? Pull the code. Your Jeep is trying to talk to you and you're not listening.

 

My 99 did this and my mechanic replaced my TPS.
Shifts like a champ now.
RSWiser