1990 XJ "Neutral Slips"

Hey guys I have one that i simply just cant figure out. I have a 1990 XJ 4.0L (AW4 trans) - Problem is while driving that it "slips" like i shifted it into neutral, rpms jump to 3grand on the tack and almost a soon as it started its over. I have found that i can accellerate through the issue and it will stop also. I first though that it might be the Tranny so i replaced it, no dice problem still there, only think i can think of is possibly the kickdown cable may need ajusting or possibly the tranny computer module. Any ideas (anyone else have this problem)

Test the MAP sensor before you look into the trans ECU.

oTHERS SHOULD BE BY SOON to help also

Mike

i think it might be to old for electronic control ? did you use the same torque converter in your new transmission?

just throwing stones

I changed the torque converter with the Transmittion. I will try the MAP module and see if that does it before i change the ECU.