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89 Cherokke not starting at all


 
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zutalores
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Joined: 05 Feb 2005

PostPosted: Sat Feb 05, 2005 1:16 pm    Post subject: 89 Cherokke not starting at all Reply with quote

I just bought an 89 Cherokee 4.0L and have diagnosed that the ignition coil is not sending a charge to the distributor. There is power to the ICM and I just bought a new coil. Could it possibly be the computer? Any thoughts? Help would be greatly appreciated.
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mireson
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Joined: 05 Feb 2005

PostPosted: Sat Feb 05, 2005 7:39 pm    Post subject: 89 Cherokee won't start Reply with quote

I had the same problem with mine. There is a crankshaft sensor mounted in the top of the bell housing. This sensor is needed to detect TDC on start. Once the engine is running it does not need the sensor any more. You can get to it without having to dismantle anything. The sensor is not very expensive. You can see it if you look down on the bell housing from the top, drivers side.
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Mike Ireson
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zutalores
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Joined: 05 Feb 2005

PostPosted: Sun Feb 06, 2005 5:53 am    Post subject: Reply with quote

Thanks Mike, I'll try it out and see.
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zutalores
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Joined: 05 Feb 2005

PostPosted: Tue Feb 08, 2005 4:34 pm    Post subject: Reply with quote

Nope, didn't work, Brand new CPS and doing the same thing. There's power all the way to the coil, but won't send spark todistributor. Any thoughts?
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zutalores
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Joined: 05 Feb 2005

PostPosted: Thu Feb 10, 2005 7:31 pm    Post subject: Reply with quote

Still stuck, need help.
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jeep1947
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Joined: 08 Feb 2005
Location: Michigan

PostPosted: Fri Feb 11, 2005 7:08 am    Post subject: Reply with quote

It could be the icm or even the ecm. It is hard to diagnose with out being able to see the vehicle. My advice would be to go to a salvage yard and see if you can get an icm or ecm for cheap and try them.
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-1947 jeep willis
-1993 jeep cherokee
-1998 jeep wrangler
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zutalores
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Joined: 05 Feb 2005

PostPosted: Fri Feb 11, 2005 10:03 am    Post subject: Reply with quote

I already changed the ICM and it didn't make a difference. How mouch would an ECM run me?
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Code3TJ
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Joined: 01 Jan 2004
Location: Uzbekistan

PostPosted: Fri Feb 11, 2005 10:37 am    Post subject: Reply with quote

Did a quick search on www.car-parts.com and they have them from $20 up to $300.
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