So my 2000 XJ keeps Dieing with no warning. Other than that it runs perfect.

Always when it is idling.

Does need a new clock spring though.

Any ideas of what my issue is?

 

Also I did just replace the TPS

And starts back up with no issues

 

Its either not getting enough gas or air at idle check idle air controller and fuel pressure

 

HMMM it does have a vacuum leak that I have yet to locate. Could that be it?

 

Quite possibly

 

Do you have a rough or low idle before it dies?

 

Do a search for CPS Problems. It sounds like your problem.

 

I have the same problem and those are my symptoms lol. Also some times it dosent want to accelerate unless you mash the throttle at about 1300-1700k

 

I also have that issue lol HELPPPPPP!!

But my CPS is brand new but Ill look

No not at all

 

Id start with checking the exhaust pressure. If your cat is bad (ie plugged) it will restrict exhaust flow choking out your engine. Might be the CPS too.

 

OHH CPS I was thinking TPS sorry

How do I check the CPS?

 

Testing of the crank sensor is often inconclusive.

Where did you buy your crank sensor? I buy plenty of aftermarket products, but I buy my crank sensors ONLY from Jeep (either bricks and mortar or online). Some of the aftermarket sensors test good electrically, but because this is a hall effect sensor, spacing is critically important and that is where many aftermarket crank sensors FAIL.

Here is a good source for online MOPAR parts. Bought a crank sensor for my 99 for about $50 a few months ago.

https://www.moparonlineparts.com/

 

No accel unless you mash the gas sounds like a cat backup, a bad one. but if its bad enough to cause a choked motor, its really bad...its odd becuase you say it starts back up fine after it dies....hard to say, cps is possible but then again that would cause an issue while driving as well as at idle. id check your exhaust pressure as stated above, check the cps electrically just for kicks and gigs, its rather inconclusive but also odds are if your getting .5v at crank (or whatever voltage they want) its not the culprit. i agree with the exhaust idea most extensively at this point

 

My cear never actually dies though. It acts like it will but eventually it kicks itself back up but the process repeats. A quick restart always fixes it though if Im stopped. I know my exhaust isnt not plugged up because this has always happened to me since the day I first bought it and since then I ripped off the exhaust from the cat back because it was all rusted and leaking in about 4 spots. I am ordering the pro curve this weekend actually.

 

Bad o2 sensor maybe...but it also sounds like a vacuum.leak...or possibly a loose tb?