Let me be clear here. Crank means turn. Ignite means start running. So it will crank but not ignite and ur sure u have 35psi of fuel pressure. Next is to have someone gently wiggle the wires at the engine control unit while u turn the key
SOURCE: 2002 Jeep Grand Cherokee Lardo misfiring
You say you changed the cam sensor. A1391 code is a crank sensor on the top of the trans. bell housing.
SOURCE: 1993 Jeep Grand Cherokee, V6. Oil Pressure Gauge Read High.
it could be the sensor you should look at the oil pressure relief valve
SOURCE: location of crankshaft position sensor Jeep grand cherokee 1997
left rear of engine block,on transmission bell housing.best way from top under brake booster use a wrench,
SOURCE: 99 Jeep Grand Cherokee Brake light problem
You can adjust the switch by putting your thumbs on either side of the switch plunger and pushing toward the brake lever. The switch shaft will ratchet into the new position which is will then be depressed by the brake lever when it is the brake is not being depressed.
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