Recently I have been plagued with numerous problems involving the stalling and sputtering of my 99 XJ 4.0 i6 4wd. After weeks of work I seemed to have isolated a problem when making hard left turns. Every time I attempt to make a left turn from a stop or try to accelerate hard through the turn the engine sputters and acts like it is going to stall. I have read about the 1/4 tank problem from the feeder tube. This however, this occurs with a full tank. The fuel system pressure at the fuel rail is 45psi before start and at 50psi after start. I have cleaned grounds, replaced sensors, filters, and check a lot of wires around the exhaust manifold. This only happens when in gear. I have tried to wiggle wires and things while idling but to no avail. Is there something I am missing? I really need some help on this one.
The problem stops when straightening out, almost immediately upon turning the wheel back the other direction. The steering assembly does not appear to pinch or twist anything as it moves independently from any wiring. As long as I don't try to accelerate too hard or am not going up hill turning left it acts fine. Up hill turning right or straight up hill there is absolutely no problem. With a full tank it would seem that the pickup in the tank would be completely covered anyway so shouldn't be the problem.
When this problem started if the engine was not at operating temp it would stutter upon shifting into gear and any attempt at acceleration would cause the vehicle to die. After this event the vehicle would not start. The new CPS immediately solved this problem. This is when I was able to narrow the symptoms down. In addition to the CPS the following has been replaced: Spark plugs, SP wires, Distributor, Dist. cap, rotor ign., battery, TPS, air filter, battery terminal ends.
The problem stops when straightening out, almost immediately upon turning the wheel back the other direction. The steering assembly does not appear to pinch or twist anything as it moves independently from any wiring. As long as I don't try to accelerate too hard or am not going up hill turning left it acts fine. Up hill turning right or straight up hill there is absolutely no problem. With a full tank it would seem that the pickup in the tank would be completely covered anyway so shouldn't be the problem.
When this problem started if the engine was not at operating temp it would stutter upon shifting into gear and any attempt at acceleration would cause the vehicle to die. After this event the vehicle would not start. The new CPS immediately solved this problem. This is when I was able to narrow the symptoms down. In addition to the CPS the following has been replaced: Spark plugs, SP wires, Distributor, Dist. cap, rotor ign., battery, TPS, air filter, battery terminal ends.
