I have a 1999 4.0L Jeep Grand Cherokee. The engine starts fine, but after 20 - 30 minutes of run time the motor dies and will not restart until the vehicle sits and cools completely down. Then it starts right up and runs another 20 - 30 minutes and shuts down. No other problems. Everything else works fine.
I'd suggest the ignition control module, however I'd have a certified mechanic check it out just in case...
TDC sensor may be faulty due to chaffed or cracked wiring
dan this is 2009 post. and why guess.?
guessing is for kids.
the op failed to use a scan tool
thats not a guess. but is fact and why he failed to find causes.
the ASD drops and the PCM reports that.every time. if not , then that too is a KEY FACT.
1993 to NOW, true.
from dead files, its BACK !
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We have replaced several items and nothing has fixed the problem. Sometimes it starts right back up and shuts down several times and other times you have to let it set for sometime before it will restart. Vehicle runs fine when running, but shuts down without warning.
Vehicle shuts down without warning and sometimes will not start back up for sometime. Sometimes if starts back up and shuts right back down several times. It will also miss real bad just before shutting down but most of the time it shuts down without any warning. Sometimes it throws several different codes and sometimes doesn't throw any codes. The vehicle runs fine when it is running. The problem is becoming more frequent with time.
my 04 jeep grand cherokee was running and it just died and will not start
runs fine while sitting and sometimes while driving but eventually shuts off and after it sits a while starts again goes a few miles and shuts off again
was running fine
While driving my jeep after 35 minutes, it just died. It would then not start, no crank
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