I'm having a similar stalling problem with my Jeep (2007 5.7L Hemi). Has been in and out of the shop since April. Initially went in for a bad MAP sensor that was causing the Jeep to run rough. They replaced the MAP Sensor. Then it started cutting out at speed (immediately restarts w/o my intervention) and stalling when idling (have to manually restart).
About three weeks before all this started, I had a tune-up done on it where the dealer replaced the spark plugs (copper) and fluids (oil, transmission, transfer case, f/r diferrentials).
So, far the dealer has replaced/repaired:
- Map Sensor
- Automatic Shut-off Cuircuit (switch in fusebox)
- Wireless Control Module (because when it stalled: turning the key, it would just crank; turning the key to off and removing/reinserting, it would start immediately)
- Checked Keys
- Fixed Faulty Ground (From PCM to fuel rail)
- Moved Coil Harness (to increase distance from the coils)
- Checked for frayed harness behind the wheel well (this was reported as a problem by Chrysler)
Now they are:
- Going through the wiring harness wire by wire to see if that was damaged when the plugs where changed.
- Checking the transmission. Chrysler techs have reported that when the transmission fluid is changed there is a potential of an air bubble occuring in the torque convertor. This air bubble can cause a loss of power and the car to shut down when you're at idle. The techs saw this occurring a few weeks after the fluid was changed as the bubble worked it's way through the transmission/torque convertor.
But, they are stumped and grasping at straws for a solution. Any help would be appreciated.