Well Crud! Another '96 XJ with an Intermittent Stalling Issue

RCP Phx said:

The ground is behind the left rear kick panel, right behind the spare tire mount.

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techno1154 said:

I have swapped the relay around several times and have the same results with each relay. Is there a difference in relays? I am going to throw a few sensors at it to see what helps.

Anak,
I throw my experiences in your post to see if we have something in common. I did clean the grounds in the engine bay which did not make a difference. My next move is to see where the fuel pump is grounded and renew clean/it. Not sure that will help but it is worth a shot.

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techno1154 said:

I have been going through the same thing for almost a year. Did a complete wiring overhaul with no improvement. https://www.naxja.org/forum/showthread.php?t=1163382

Recently I discovered online that this problem plagues the 1996-year model based on posters from England, Australia and here in the US. It bewildered me that that only seem to happen after the XJ was sitting for several hours. In my case, the fuel pump will run nonstop, and the engine will not start even though the fuel pressure remains near 50PSI. A few weekends ago I was home after a two-week absence and noticed when this happened, the normal lights in the dash will not come on i.e., battery, check engine etc. which should come on for a few seconds then go off whether the engine is running or not. This led me to assume that the fuel pump relay was getting ignition power the ASD relay was not getting power or it was simply finicky after an overnight shutdown. I replaced the relay and drove the XJ for 2 days and it started each time with no problem. That was three weeks ago. I will be home again at the end of the month at which time I will see if my fix is permanent or not.

The online posters claimed their fix was to replace the PCM. In my case, replacing the PCM did nothing to fix this issue. However, if I disconnect the power at either the battery or the PCM it will start just fine then the problem would return after a shutdown for several hours. I would admit though that when the engine is running, I could drive for several hours with never a hiccup. My XJ have almost 400,000 miles.

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