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Old 11-04-2013, 11:17 AM
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jcountryman jcountryman is offline
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ignition module or coil? Won't start

Any tips on diagnosing which one it is? Was shutting off intermittently, so I'm pretty sure it's an electrical problem.
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1990 Jeep Grand Wagoneer (AKA The Tardis)
A few pics here: http://picasaweb.google.com/10040474...0764102/Waggy#
Building a new one, one part at a time
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Old 11-04-2013, 11:30 AM
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babywag babywag is offline
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Location: Land of froot loops and cukcoo-nuts, CA
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Take a close look @ your coil wiring "horseshoe" connector.
Frequently the wires are frayed and broken @ the crimp after 30yrs.

Auto parts stores sell a replacement connector for this very reason.

Modules don't usually cause a short term shutoff issue.
Generally when they fail and the vehicle won't restart until they cool down.
However anything is possible, they can be tested @ the auto parts store.

Not sure where you are in CA, but I have a couple known good modules collecting dust in the garage.
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Old 11-04-2013, 12:06 PM
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I'm in Idyllwild, near Hemet... where are you?
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Julia Countryman
Member FSJ Prissy Restoration Association
1990 Jeep Grand Wagoneer (AKA The Tardis)
A few pics here: http://picasaweb.google.com/10040474...0764102/Waggy#
Building a new one, one part at a time
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Old 11-04-2013, 12:12 PM
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Oceanside
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Old 11-04-2013, 12:56 PM
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serehill serehill is offline
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Yeah loose connection & bare wires

Research all plugs connections & wires.

I wouldn't completely eliminate fuel though.
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Old 11-04-2013, 02:01 PM
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Unplug the module, key on, and you can make the coil spark by quickly grounding and lifting a wire from the (-) terminal.

Or - likely easier - substitute a known good coil. A spare coil is a handy thing to have.
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Old 11-05-2013, 04:17 AM
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Carnuck Carnuck is offline
 
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Location: Gold Bar, WA
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Purchase a Napa coil IC12 or IC12SB. cut off *&$$@% horseshoe connector and wire directly to new coil (note wire color to + terminal first) and call it good. Easier starting is just one bonus (higher spark output)
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Old 11-13-2013, 10:12 PM
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Well, I discovered a few things today:

1. How far the waggy would indeed coast, as it stalled as I turned the corner heading toward my daughter's school about a mile and a half away. Fortunately, it's a gentle downhill slope, so we coasted the entire length of the road and had to blow through only one stop sign.

2. The stalling issue is probably a carb/choke thing, but I'm not fully convinced that's the only issue.

3. Against all odds, the new starter that was installed not 6 months ago failed less than 20 feet away from where the old one failed.

4. Waggy owners in Idyllwild are amazingly nice people. One tried his best to help get mine restarted today. Totally kewl guy, owner of a '70 or '73.
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Member FSJ Prissy Restoration Association
1990 Jeep Grand Wagoneer (AKA The Tardis)
A few pics here: http://picasaweb.google.com/10040474...0764102/Waggy#
Building a new one, one part at a time
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