theallpowerfulme
NAXJA Forum User
- Location
- knoxville, tn
I have a '96 XJ with no modifications to the drivetrain. I recently experienced a no start issue in which the engine would turn over and never make an attempt to fire. The following were replaced: crankshaft position sensor, dist cap, rotor, plugs, wires, TPS, IAC all with no change in the problem. I then replaced the ECU (top picture below) with one from a '97 (second pic below). The jeep fired right up, but ran like it had a cylinder or two misfiring. This would not change with throttle position. Noticing that all numbers on the ecu were different, I assumed a different year model my have different settings so I bought another 96 ecu (third pic below). On the 96 ecu, one of the numbers is the same as the original that came in my jeep, but all the other numbers are different. After installing the ecu, the jeep fired right up and ran great on several occasions. Then, it would fire up, but not idle. Now, it tries to fire... but rarely runs (note this is different than the original problem in that it actually tries to run, but doesnt). It will start on occasion and idle for about 1 min, but them usually dies on it's own (I am giving it zero throttle position during this). I can put the '97 in it and it will fire right up, but again, will run like it has a misfire on two or more cylinders. Help a noob out! TIA! :cheers2:
EDIT: I'd like to add that there is no CEL during any of this. Except the '97 which has a CEL and the gen light on.
***VIDEO ADDED***
Here is the starting/idle issue with the 1997 ecu:
1997 ECU starting on Vimeo
Here is the no start issue with the replacement 1996 ecu:
1996 ECU starting on Vimeo
EDIT: I'd like to add that there is no CEL during any of this. Except the '97 which has a CEL and the gen light on.
***VIDEO ADDED***
Here is the starting/idle issue with the 1997 ecu:
1997 ECU starting on Vimeo
Here is the no start issue with the replacement 1996 ecu:
1996 ECU starting on Vimeo
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