My 1993 Jeep Grand Cherokee was losing power and acting like it was going to die and then would regain power. It was also difficult to start or would not start after driving for 30-45 minutes, then would start after an hour or by the next day. The repair shop found no fault but recommended replacement of the crankshaft sensor, so I had it replaced. Two days later, while driving, it died and will not start. I don't seem to be getting a spark to the coil. Before replacing the crankshaft sensor I had replaced the fuel filter, spark plugs and wires, rotor and cap. I am getting fuel to the engine. What could the problem be that it won't start? Why no spark to the coil now?
It may be the brain of the jeep. if they get condensation in them from the rain , they can act as you described. It is only about a $30 part @ Pep Boys. It looks like a box with 2 or sometimes 3 plugs coming off of it and it plugs up to the wiring harness, and it mounts on the firewall or the inside fender-wall of your jeeps engine compartment.
Testimonial: "Thank you! I've replcd the ignition coil n battery. Won't start!Now, no fuel to engine. Still seem like it's the brain or PCM, ASD Relay or Fuel Pump?"
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Thank you! I will try your suggestion and will post an update as to the outcome.
I replaced the ignition coil so I'm now getting spark to the coil. Jeep still wouldn't start and I noticed the internal lights dimmed when I turned the key to start it up so, I had the battery tested. They said it was bad (only 1 1/2 yrs old and still under warranty). Replaced the battery. Now, I'm not getting fuel to the injectors. If I pour in a little fuel, the jeep starts right up and then dies when the fuel is burned.
Does this still seem to be the brain of the jeep or is it a bad fuel pump, ASD relay or the PCM? Any assistance is appreciated. Seems odd that the Crankshaft sensor, ignition coil, battery and fuel pump would all go bad at once. Not showing any Diag Trouble Codes except #12, battery has been disconnected. Thank you.
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