Have done complete tune-up on this 4.0 6cyl, 2wd..1996 Jeep Grand Cherokee Laredo. Have replaced coil and crank sensor. Doesn't die anymore and starts every time. The problem is it cuts out and jerks bad, can't speed up. Acts like it not getting fuel. Auto zone ran test..it gave code P 1391, what is code P 1391 and is it related to my symptoms?????

SOURCE: 1995 JEEP GRAND CHEROKEE RAN AND DIED WILL NOT START

They are easy to replace. Here is the location It is near the top of the transmission bell housing just to the left of centerline. You will need to unbolt it from underneath using a 7/16" socket on a long extension. Before doing so, set the parking brake and disconnect the transmission shifter linkage. Do this from underneath the truck. Let me know if this helps you at all

SOURCE: my 1996 grand cherokee laredo 4.0 misfires code

If you're saying that you already had the troublesome crank sensor replaced then maybe your electrical connections to the sensor is bad, somewhere, along the way to the ecu.

SOURCE: My 2000 Jeep Grand Cherokee Laredo had the

depending on how long it sat, and also on if you had the code cleared when you replaced the o2 sensors could be why the light is lit, Now for the not starting, again depending on how long it sat ,, check the fuel pressure, you need a constant 6 lbs of pressure , also check for fire, pull one of the plugs,, reattach the plug wire to it,, hold it with a pair of insulated pliers, and ground the bottom of the plug to ground, any bolt attached to the motor ( as long as its a metal surface) will do, have someone crank the motor , Look for a nice blue spark arching across the tip of the plug, if it does, you have spark, put the plug back in, if it doesn't, you need to back track the electrical system,, follow the wire back to the dist cap,, remove the cap, check for any burn marks or charred or eroded contact terminals inside the cap,, also check the rotor tip, and contact rotor button in the center of the cap,