I have a 2000 jeep cherokee with the 4.0. You can make about 3 stops with it, come back out and it will just crank with the no bus and engine light on the dash and you have to wait 2-3 hours before it will start again. I was told that the crankshaft sensor was replaced. When it wants to start there is a delay in the fuel pump engaging. When it does the no bus thing the fuel pump doesnt do anything. Any help is appreciated.