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1996 GCL - Engine will not start!

Tiny
ROB ROBINSON
  • MEMBER
  • 1996 CHRYSLER GRAND VOYAGER
Make: Jeep
Model: Grand Cherokee Laredo
Year: 1996
Mileage: 190,000 km
Engine size: 4.0

Bought this GCL as a theft recovery. Jeep was stolen, had an aftermarket Bulldog alarm and was found on side of road, unable to run. The key was broken off in the ignition switch. The Jeep had never had a factory alarm.

Changed the ignition switch, engine will turn over, but will not start. Jeep was at a Chrysler dealer before I bought it, who poked and prodded at the PCM wiring, and replaced the PCM. They also removed the bulldog alarm and all the aftermarket wiring.

Jeep still will not start. Fuel pump comes on when the key is turned, however there is still no spark.

I have fuel pressure to the fuel rail of 30 psi when trying to start the Jeep. But I still have no spark.

Supposedly the dealership tested all the crank sensors and all were fine. There are no codes, and no engine warning lights. Anyone have any ideas why it won't start?

Please help me start my Jeep!
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Wednesday, May 2nd, 2007 AT 9:12 AM

4 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Check and see if there is power at the Batt terminal of the coil. If not the switch may have been damaged too. Did you change the plastic part of the ign sw? Or just tumbler?
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Wednesday, May 2nd, 2007 AT 1:30 PM
Tiny
ROB ROBINSON
  • MEMBER
  • 2 POSTS
Yes. There is power at the battery terminal of the coil. And I changed the whole ignition switch, I swapped the one from my 1996 Jeep GC, and still no luck.

Thanks for the suggestions though!
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Wednesday, May 2nd, 2007 AT 2:08 PM
Tiny
TLDRAKE
  • MEMBER
  • 1 POST
Jeep won't start. It cranks, but has no fire. I have replaced fuel pump, fuel filter, relays, coil, battery and battery cable ends. Still no fire. After it sits for a few days sometimes it starts, but it seems to happen after it has rained. Someone suggested the crankshaft sensor. Any ideas? Please help, this has been going on for almost 3 months. The jeep place placed in on their computer machine after it started, and everything checks out fine. It will run sometimes for 5 to 14 days, then starts over again.

Please help me start my Jeep![/Quote]
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Friday, May 4th, 2007 AT 10:21 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Sometimes the crank position sensor can be defective and not throw a code. Check the connection to the cps.
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Friday, May 4th, 2007 AT 5:23 PM

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