hey guys im in need of some help, i have a strange problem, first let me start by letting you know that my cherokee is a 2000 limited, 4.0l, aw-4 into a np242. the problem i am here for is my transmission wont upshift until its way high in the rpms, sometimes it will shift eventually, sometimes i have to let off the throttle for it to shift. i am assuimng this is some sort of electrical problem becuase i discovered that when driving down the road, if i bump it into netural, kill the engine and restart it while still rolling, it shift perfect everytime. i have recently replaced all 02 sensors, the throttle position sensor, and idle air control. they were all bad. now the idiot light is no longer on, but still 9 times out of ten it revs way to high before shifting. is there anyway to test the TCM? also it runs really rough and stalls out when in reverse sometimes. can ya'll help me out here maybe?

 

How is the tranny fluid level?

 

right at the full mark, doesn't smell burnt and its not real dark.

 

Adjusted detent/kickdown cable ever ?

 

yeah i checked it, its fine.

 

did it do this b4 tps replacement ?

 

yup, its been doing it since about a week after i got the thing (6 months ago)

 

have you disconnected battery since changing all you changed

 

so you have done this to cable correct...

 

no but i cleared them (the codes) with my scanner.

 

yes i have.

 

some times disconnecting the battery has fixed issues computer relearns might need to get meter and check tps readings getting bad parts seems to be more common nowadays

 

i will disconnect the battery, let it sit, and get back to you. but i hope my parts aren't bad cause i buy everything for the dealership...i really hope their parts aren't junk now too

 

not very common from what ive seen here

 

you mean dealership parts aren't commonly bad?
thats good news then