With such an intermittent problem what might be the areas to consider? Anyone had similar experience?
Frank
With such an intermittent problem what might be the areas to consider? Anyone had similar experience?
Frank
Not experience with an XJ, but I have owned several other cars and trucks, and I woul have the alternator tested. I had a chevy truck once that would only run until it reached a certain RPM, then would just die. It turned out to be the alternator was tit's up. To test it, you might just run it at an idle, and rev up the engine slowly and see if it finally dies. You may have reached high enough RPMs to trip the alternator the one time, then after it happened, you may have unconsciencely shifted at less RPMs trying to ensure it would get you home. Most people when they cannot determine what is wrong with their vehicle, tend to drive it softer until they get it home.
Thanks guys - Crank Position Sensor sounds the likely culprit - definitely not RPM sensitive as all previous occasions have been while coming to a halt or taking off gently. Frank
My fuel pump ... 96' Cherokee, 4.0 ... went intermittent something like you describe before finally packing it in. I replaced the pump (had it replaced) and while so doing replaced the CPS and fuel filter as preventive maintenance. So maybe as the others have suggested, start with the CPS, my opinion, worth doing anyway.
I would look very hard at the Crankshaft Position Sensor that is mounted externally next to the flywheel on the left-side of the vehicle when sitting inside. This gives the master timing information for the entire engine and when it goes bad, and they do, it causes symptoms like you're experiencing
Jerry
If I had read the post carefully enough, I would have known that the XJ problem was not the same as the one I subscribed. Sorry for the screw up.
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