JeepWoman

Changed out the CPS and it's still shutting down. Changed the TPS and IAC and it even shuts down when just sitting there at idle. No pattern to it at all.

jordan96xj

Here are some questions that might help others help you:

1. Does it always start normally?
2. Does it ever quit when driving at higher speeds?
3. Is there any hesitation or stuttering when accelerating (when applying gas pedal)?
4. Is there a check engine light on?
5. Does it quit frequently (every time you try to use the vehicle)? or every once in a while?

The 2 most basic things I would want to test first would be:
1. Fuel Pressure
2. Spark

I would also avoid replacing more parts until you at least have a logical direction to go in. Might as well save your money for replacing the -correct- part.

JeepWoman

Never any problems starting
Can quit at high or low speed
no stumble when accelerating
no check engine lights and no codes either
6 times today, 5 while driving, 1 sitting in the driveway
new fuel pump and gas tank last year

jordan96xj

In all of the 6 failures today, was the vehicle at operating temperature (including the one in the driveway). Somewhere at or above 200 degrees? (if you don't have a temp gauge, then just make a guess as to whether the vehicle was "warmed up" all the way in all of these cases. Does it -ever- happen when the vehicle is not warmed up?

JeepWoman

mine never goes over 200. Normally runs under 200.