Sounds to me like the PCM Problem that is common with these vehicles; check out jeep grand cherokee PCM fix on google & you will see what i mean, the simplest solution is to get a new or gauranteed good PCM & fit it then back the screws off quarter inch & this should solve your problem for good. good luck from paul in England
Check your (tps) throttle position sensor
SOURCE: 1995 JEEP GRAND CHEROKEE RAN AND DIED WILL NOT START
IS IT THE 4.0L?IF SO U MAY HAVE A BAD CRANKSHAFT POSITION SENSOR.
SOURCE: my car starts and then dies
sounds like a security issue they installed a factory security system which will prevent the vehicle from running unless its reset go to passenger door lock turn key twice it worked for me after chasing other problems for a few hours
SOURCE: 1999 Jeep Grand Cherokee Died while driving home
check the fuel pump fuse/relay, could be just bad enough to cause an intermittent start/no start. and check fuel pressure,spark and the crank position sensor.
SOURCE: Car dies at random moments
I just had this problem and replaced the camshaft sensor, crankshaft sensor, and coolant temp sensor. i replaced these items because of high mileage. try these but first check your relays located under the hood on the passenger side. sometimes they get hot and fail.
SOURCE: 96 jeep grand cherokee starts but wont idle
CHECK FUEL REGULATOR ON FUEL INJECTOR RAIL,&ALSO FUEL PUMP, CHARLIE
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Have you checked your Vacuum lines? See below for the Diagram for a 96 Grand Cherokee.If they are good (and the accessories are new/good) you may have some throttle body issues.
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