XJ&CHZ4ME
NAXJA Forum User
- Location
- Unionville, MO
OK gang, I am here to ask for help this time instead of to give it I have searched until I am about ready to fall asleep.
This is the rig I am working on:
1998 XJ/4.0/AW4/NP231
The rig will fire right up and idle perfect, and even in park or neutral you can rev it to the rev limiter and it runs perfect. Once you put it in gear and get going and try to accelerate under power, it loads up and wants to sputter and try and die. I have put a fuel pressure gauge on it and it holds a constant 46# of pressure at the rail. We replaced the TPS and there was no change, then we replaced the CPS and there was still no change. We took both items back off and put the original ones back on and still no change. We also did a quick cleaning on the sensor (like an air intake sensor of sorts on the side of the TB). We have not replaced or messed withe the MAP sensor....I am at a loss at this point. I am at my brothers working on this rig w/ his very limited tools, so it is even more frustrating that I am 6 hours from my shop with everything I need. Any help is greatly appreciated...HELP !!!!!!!
Thanks in advance.:thumbup:
Cheeseman-OUT!
This is the rig I am working on:
1998 XJ/4.0/AW4/NP231
The rig will fire right up and idle perfect, and even in park or neutral you can rev it to the rev limiter and it runs perfect. Once you put it in gear and get going and try to accelerate under power, it loads up and wants to sputter and try and die. I have put a fuel pressure gauge on it and it holds a constant 46# of pressure at the rail. We replaced the TPS and there was no change, then we replaced the CPS and there was still no change. We took both items back off and put the original ones back on and still no change. We also did a quick cleaning on the sensor (like an air intake sensor of sorts on the side of the TB). We have not replaced or messed withe the MAP sensor....I am at a loss at this point. I am at my brothers working on this rig w/ his very limited tools, so it is even more frustrating that I am 6 hours from my shop with everything I need. Any help is greatly appreciated...HELP !!!!!!!
Thanks in advance.:thumbup:
Cheeseman-OUT!