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cherokee stalls and doesnt start ocassionally


 
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rbjeepster
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Joined: 11 Jul 2007
Location: Brentwood,California

PostPosted: Thu Aug 09, 2007 11:30 am    Post subject: cherokee stalls and doesnt start ocassionally Reply with quote

this started about 2 weeks ago and its very random, i have a 1990 Cherokee 4.0 automatic. i parked after bout a 15 minute drive went back out about 20 minutes later and the engine would crank and crank but not start i opened my hood and pressed the shredder valve and got plenty of fuel and pressure so there i knew it wasnt a fuel problem at the moment so just for the hek of it i i figured it was a spark issue so i unplugged the 2 connectors on the botton of the ignition module right under the coil. i then plugged them back in and the thing started back up. later on that week it stalled at a stop light luckily it started right back up with out me having to get back out but when i got to my destination and parked i went to leave it wouldnt start so i pulled those same connectors and plugged them back in and it started and ran fine . i put a crank positioning sensor in about 8-10 months ago so im not sure if its that or a coil / ignition module problem also this happens when the engine is at operating temp after a drive

THANKS
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1fox2go
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Joined: 01 Dec 2004
Location: Fishersville, Virginia

PostPosted: Thu Aug 09, 2007 10:51 pm    Post subject: Reply with quote

hmm since you have a new crank sensor its probably the coil

anyway you could borrow one off another jeep to see if it is that for sure?
because if I remember correctly the coil is pretty pricey
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96 Cherokee 7.5 inch TnT long arm Locked F/R, D44 rear, 4.56s, 35x12.50 Muds/36x12.50 TSLs
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munky*
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Joined: 21 Jul 2007
Location: fargo,nd

PostPosted: Sun Aug 12, 2007 8:50 pm    Post subject: Reply with quote

a new ignition control module is about 150 bucks but my jeep was doing that and that was the problem when is got up to normal operating temp it would stall and not start for a while i would try a junk yard first
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badger
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Joined: 16 Sep 2005
Location: Utah

PostPosted: Sun Aug 12, 2007 9:32 pm    Post subject: Reply with quote

second be choosy were you buy things like a CPS. i have heard just because its new doesn't mean it will last .i have heard of them last like 2 weeks and going right back out.i was told by several people get them only from the dealer.
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HellDawg
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Joined: 27 Sep 2006

PostPosted: Thu Aug 23, 2007 11:49 pm    Post subject: Reply with quote

I have the same problem. Mine takes a few times of trying to crank it and then it starts back up. It will fire but then die out again. It`s been like that for years. Sucks when your in traffic.. Rolling Eyes
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nukemknight
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Joined: 08 Sep 2007
Location: VA

PostPosted: Mon Sep 10, 2007 10:35 am    Post subject: Reply with quote

I had this problem this weekend with my 96 4.0 Cherokee. After 50 minutes of driving, I stopped for gas. When I tried to start the engine it would crank but not start. After letting it sit for about one hour, it started so I went on my way.

I drove for about 45 more minutes and it was time to get on the offramp to another highway. I let completely off the gas and the engine cut off so I coasted up the offramp and pulled off. Once again, it would crank but not start, and finally started after sitting for about a hour.

I drove it home for 1.5 hours yesterday with no problems. Anyone have any ideas what could be causing this?
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JeepinNH
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Joined: 13 Sep 2005
Location: New Hampshire

PostPosted: Tue Sep 11, 2007 6:32 am    Post subject: Reply with quote

I had the same issue with a Grand Cherokee. It was a sensor under the rotor in the distributor (Camshaft position sensor I think). Took me all summer to figure out because it was so intermittent. I know the regular Cherokee has a Crank position sensor but not sure about the one under the rotor.
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Present: 99 Cherokee
Past: 86, 87 Cherokee; 94 Grand Cherokee
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