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I have the same problem on 2 WJ 4.0L using Hypertech too... Just wondering how do you solve this??

ok, Where is located the TCM fuse exactly? Under the Dash on passenger side, or it is on the engine section ? thanks I will say him this suggestions..

My friend has near to 2 months with a transmission nightmare.. He has a 1996 XJ with AW4 (Automatic) TC 231 and 3.55 gears He has already changed with diferent mechanical shops: 1.- A Used Transmission 2.- Torque Converter 3.- TCM 4.- PCM 5.- New Solenoids 6.- Park/Neutral switch 7.- TPS 8.-...

We are planning to use the crankshaft and Rods of a 4.2L to do 4.5 stroker owr 1994 4.0L HO. With this cam. What kind of ARP bolts do I need exactly, and what more do you suggest to this project ? I will call to ASE to se the reprogramming details of the PCM, and I want to try find a local...

thank you very much for the info. About the CR, what is the best option for this cam ?? and what did you mean exactly with "I suggest that you balance the reciprocating assembly" ?? the list of parts that you metioned, or balance some engine part, like the Crankshaft...Sorry for my ignorance...

Hello, Does anyone is using this cam on a 4.0L ??? I bougth this cam (ready to install), but I want to know more about the Fuel and MAP problems. thanks