Originally Posted by RHD MAILJEEP

I have a 1995 jeep cherokee 4.0 that runs fine for about an hour are an hour and half then will suddenly shutoff....turn off switch and restart can hear the fuel pump buzz it will start and go about a half a block are so then die again....let it cool off about thirty minutesand it will run fine for about another hour then same thing....have changed crankshaft position sensor...new ecm...new ignition switch...new module in distributor...new battery cables....was getting a code 42...asd shutdown....what triggers this code?...cleared codes and now i am getting a code 54...module in dist which has already been replaced.....three different shops cannot solve problem....any help would be greatly appreciated...i use this vehicle to do my job...am a rural mail carrier and these vehicles are perfect for my job...dont want to let it go...