96 jeep grand cherokee no start. Has no spark, replaced coil, still has no spark. fuses and relays in power distribution all good, also fuses in cab all good. no codes in ecm. plug at coil has good ground,but no 12v. cap, rotor, wires all new. distibutor turns while cranking engine. I have good fuel pressure and all guages work! does the coil get12 volts all the time? from where? Hall effect switch? Any help would be appreciated. Thanks

I would make sure you have voltage to the coil. Could be a fuse or relay problem. Is the check engine light on when you turn the key on ?

Check the ignition coil harness you may have a bad connection.When you turn the key on the relay ASD should click without the ASD relay operation expect no power to coil and even no fuel pump. Do this turn the key on and cycle the switch you should hear the fuel pump activate. If you dont check the fuse.For the coil to have no power you may have bad connection on the harness or connection.Go to the ignition coil on the B+ that is battery power apply battery power and see it it starts. If it doesnt you will need to inspect ignition control module

Cam sensor, crank sensor, bad coil, all could give no spark. Check all fuses and relays.... wiring connections as well. 320 is a crank sensor code.

CHECK ASD RELAY THAT IS AUTOMATIC SHUTDOWN RELAY IN THE POWER DISTRIBUTION CENTER UNDER THE HOOD IN ENGINE COMPARTMENT.IF ASD RELAY GOOD PROBLEM COULD BE CAMSHAFT SENSOR IN THE DISTRIBUTOR.TO SAVE TIME AND MONEY HAVE JEEP SCANNED FOR CAMSHAFT SENSOR AND CRANKSHAFT SENSOR FAULTS.

check for spark??...and ignition coil

have the crank sensor replaced this controls the spark and injector pulse it is located on the drivers back side of the engine above the transmission housing!

E C U FAULTY.

Check the asd relay in the fuse block. Replace it with a known good relay

The crankshaft position sensor was seriously problematic in those old jeeps. It's located towards the top of the bell housing slightly to the driver's side I think.

Have you checked the cam sensor. It coincides with the crank sensor to tell it to fire . And it controls the injectors.