I have a 99 Jeep Grand Cherokee 4.7L V8. It started intermittently stalling 9 months ago. At first it didn't occur very often and it would start up after a couple of minutes. It has gotten progressively worse (and the weather has gotten hotter). Now when it stalls it takes 3-4 hours before it fires right up. When it stalls, it doesn't sputter or anything, just shuts down. It will crank but won't fire. The engine temperature is always at 210 when it stalls and no codes show up. When it is running it runs great. This problem has gotten so bad that it stalls every time it is driven - making it useless. We have changed the crankshaft position sensor (and it ran great for a couple of weeks after that)we found that the wires doing to that sensor were bare, so we fixed those. We have changed the ASD relay and the fuel pump and filter. Something new that we just noticed is after it stalls, we put it into neutral and it started right up. When put into gear it shut down again. I love driving this car, but it has become to unreliable my husband is ready to push it off a cliff.
Any help would be greatly appreciated!
Tuesday, August 21st, 2012 AT 11:19 PM