86 cherokee 2.8 no start - JeepForum.com
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post #1 of 25 Old 06-17-2011, 11:11 AM Thread Starter
scottxr400
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86 cherokee 2.8 no start

I was driving to work and the truck just shut off. I got it towed to work. Check and found no spark. Changed the coil nothing returned that got a rotor and cap put that on and still nohing any ideas

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post #2 of 25 Old 06-17-2011, 11:26 AM Thread Starter
scottxr400
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Also when I cank it the rotor turns
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post #3 of 25 Old 06-17-2011, 02:42 PM
littlehoov
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My next guess would be the Ignition Control Module, which I do believe is located underneath the distributor cap.

Looks like this:

1986 Cherokee 2.8 V6, Torqueflight 904 transmission, NP-228 transfer case. 235/75/15 AT tires. Factory tow hooks...thats about it.
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post #4 of 25 Old 06-17-2011, 03:03 PM Thread Starter
scottxr400
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That's probly under the rotor and everything right
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post #5 of 25 Old 06-17-2011, 06:28 PM
chiefbill1959
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The control module is under the rotor button. Make sure you have good grounds too. You can take the module to Advance Auto and they can check it for you. Tell them to run the test 3 or 4 times to get it warm, up to operating temp. It's not hard getting the module off. 2 small screws and the wiring. Did you swap to a known good coil? My bro inlaw had the same problem just a couple weeks ago and we tried one I had laying around. It didn't work so we tried another one and it fired right up.
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post #6 of 25 Old 06-17-2011, 06:45 PM Thread Starter
scottxr400
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yea i got the coil from a auto parts store
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post #7 of 25 Old 06-17-2011, 06:52 PM Thread Starter
scottxr400
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i had power at all four wires at the coil
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post #8 of 25 Old 06-17-2011, 07:05 PM Thread Starter
scottxr400
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do i have to remove the pick up coil to get to the Ignition Control Module or is it under the thing that the rotor screws to
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post #9 of 25 Old 06-18-2011, 04:41 AM
chiefbill1959
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It will be to the front of the dist.., it has 2 screws going thru the it. The screws are like 6 mm. or maybe 8. The picture above is what it looks like but it may be a different color. It also has some dielectric grease on the bottom of it. Don't wipe it off. When I said the front of the distributor, I mean inside it, under the rotor button, on the front side bottom of the dist.
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post #10 of 25 Old 06-18-2011, 11:23 AM Thread Starter
scottxr400
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cool thanks man going to my job in a lil to check it out
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post #11 of 25 Old 06-19-2011, 02:29 PM Thread Starter
scottxr400
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changed the control module and its running thanks alot guys
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post #12 of 25 Old 06-23-2011, 06:51 AM Thread Starter
scottxr400
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The jeep just shut off on me again this time I noticed its wasent really reving I poped it to nuetral and when the rpms hit like 3500 it died but right b4 it back fired now it won't start?
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post #13 of 25 Old 06-23-2011, 08:22 AM Thread Starter
scottxr400
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Any one know what would be the cause of the control module to keep messing up
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post #14 of 25 Old 06-24-2011, 02:54 PM Thread Starter
scottxr400
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?
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post #15 of 25 Old 06-24-2011, 03:08 PM
grsmnky1
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Did you regrease your new module before you put it back in? I had a few head problems when I owned my 86 with the 2.8. But a valve job solved it quick. If you still getting fire and it won't start now after a backfire check your carburator those are very touchy carbs.
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