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Unread 03-02-2011, 06:25 PM   #1
BeepTheJeep98
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Join Date: Mar 2011
Location: La Farge, WI
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No Spark, No Fuel 98 Cheeroke Sport 4.0L

I've got a 98 Jeep Cherokee Sport 4.0L. I think I left one of the interior lights on and it killed the battery. I recharged the battery but now it just cranks but I have no spark at the coil and the fuel pump is not energized. After reading up on similar problems I replaced the Crankshaft Position Sensor. Nothing changed from the original condition. Fuses are all good. The gas and battery gauges do not move when the key is turned.

Thanks in advance for any help.

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Unread 03-02-2011, 06:31 PM   #2
tjwalker
It's the crank sensor!
 
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You still have classic symptoms of a problem with the crank sensor circuit. The gas and battery gauges are big clues there, as there is often problems with those gauges with a bad crank sensor.

Where did you purchase your sensor from? There have been numerous threads of bad aftermarket sensors right out of the box. The crank sensor is one that I always buy directly from Jeep.

Otherwise, you need to make sure that the crank sensor connectors are good, as well as wiring. Get a can of electrical contact cleaner, spray both the crank sensor connectors thoroughly (there is also one near the #6 injector/firewall), add a small dab of dielectric grease and reconnect.

ASD (autoshutdown) circuit is a remote possibility, but I think you have an engine management sensor problem and the crank sensor is still high on the list.
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Unread 03-11-2011, 11:45 AM   #3
BeepTheJeep98
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I ended up taking it to the Jeep Dealership. They are telling me that the PCN is bad and needs to be replaced. They quoted my $500 just for the part. They warned me that getting a used PCN would most likely not work because the PCN's are VIN specific. I don't know if that's a real thing or not. Any ideas on what I should do?
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Unread 03-11-2011, 03:17 PM   #4
CJ7-Tim
Real Jeeps have dents.
 
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Quote:
Originally Posted by BeepTheJeep98 View Post
Any ideas on what I should do?
See this thread. -> http://www.jeepforum.com/forum/f11/d...e-pcn-1180335/
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