Ok, so I've been dealing with an issue for the past 2 years that comes and goes in frequency but has always been there.

as the title says I have a stalling issue with my 2000 xj where it will simply stall its also will occasionally have a hard time starting requiring me to tap the gas to get it to start up. It mostly happens at idle but it will also happen during driving independent of speed. It has stalled on me while speeding down the interstate at 65mph.

Im intermittently throwing 3 codes:
P1495 Leak Detection Pump Solenoid Circuit An open or shorted condition detected in the Leak Detection Pump (LDP) solenoid circuit.
P0340 - Camshaft Position Sensor Circuit Bank 1 Sensor 1
P0455 (M) Evap Leak Monitor Large Leak Detected A large leak has been detected in the evaporative system

but they are not constant

During the past 2 years of trying to trouble shoot this issue i have replaced the following parts

-fuel pump assembly
-crankshaft position sensor
-camshaft position sensor
-gas cap
-will be replacing the fuel pump lock nut tomorrow

I have checked the evap lines and they dont appear to have any cracks or dryrot

I am running out of ideas of what could be cause it and am getting very close to taking it into a shop but dont want to waste money on something i could do myself.

Any help would be great

 

anyone?

 

Well, usually an intermittent character tends to be more in the electrical/connection ballpark of things..
Fuel pump replaced, brand? And has any fuel pressure been measured at some point?
When it stalls, does it die as well or just picks up again after a few secs?

 

I had a similar problem with an Explorer I had before. Turned out to be a vacuum leak that took FOREVER to track down.

Have you tried the ether method yet? While it's running spray a little ether around the vacuum lines (not too much though) and listen for the RPM to change. where ever you spray and that happens, theres your leak.

 

some people use Carb cleaner as well. Probably be better to use that instead. Some will argue that ether is bad for it, and it can be, just be sure you don't super soak it. If you use card cleaner, the rpm will lower i believe.

 

Fuel pump I out in was mopar. And no I haven't checked the fuel pressure since I upgrade my injectors. It seemed fine then but that was a couple years ago. When it stalls it dies I have to restart the engine although sometimes it will sound like it's going to shut off and then will rev up and rebound

 

I was thinking of biting the bullet and getting a smoke test. I did try to check the vacuum lines with soapy water. Haven't tried ether or carb cleaner though

 

I also just replaced the battery

 

Dont use soapy water, it'll just get sucked into places it doesn't need to be.

 

Classic. I bet it was running fine, a couple years ago...