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post #1 of Old 08-24-2013, 05:41 PM Thread Starter
vinnyabs
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1983 CJ7 
 
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Sudden ignition prob. Need immediate help

Hey guys. Can someone chime in quickly. My dd and everything brand new suddenly developed a ignition problem. Drive the jeep to destination. Went to leave and nothing happened when I turned the key. Replaced the starter and same. Had battery jumped and it behaved like a bad battery. Slow at first little charge time ad fired up. Drive home shut it off and dead. Battery tested fine. Tried to jump solenoid nothing. Tried to jump wires to positive battery term nothing. Checked fuse box all good. I need to go to work in the morning so I'm dying over ere


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post #2 of Old 08-24-2013, 05:45 PM
hp_lovecraft
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What does the voltage meter show when it was running? maybe the alternator is not charging the battery? You have all the typical symptoms of a failing alternator. Most autoparts stores can test your alternator, and they are pretty cheap to replace since AMC used "off the shelf" items.

A short term solution might be to park on a hill. I had a failing alternator years ago... but push starting a CJ is way harder then a small compact.
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post #3 of Old 08-24-2013, 05:50 PM Thread Starter
vinnyabs
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I don't have a volt meter. I thought alt too but battery tested full strength after the home trip at AZ. When I turn to run position no power at coil. Doesn't make sense that started with a jump and ran if there was ign wiring prob. Plus I haven't changed anything and its been working fine

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post #4 of Old 08-24-2013, 06:04 PM
shadoow
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because you were able to jump start it i would suspect the battery, but you said it tested fine. What tests were done??
Also, did you battery and ground connections to be clean and tight? Years ago a friend of mine and I pulled into a gas station and when we went to leave there was no response when the key was turned. Cleaned and reseated the battery cable connections and all was fine.
Is there another battery around you could put in just to see if the problem is still there???
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post #5 of Old 08-24-2013, 06:05 PM Thread Starter
vinnyabs
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Battery tested good at AZ. On the machine. CCA an load. Cleaned terminals for giggles anyway last night.

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post #6 of Old 08-24-2013, 06:43 PM Thread Starter
vinnyabs
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Just tried a new solenoid. Still absolutely nothing. No power to coil. Help!!!!

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post #7 of Old 08-24-2013, 07:01 PM
86cj74.2L
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Wonkie ignition switch.
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post #8 of Old 08-24-2013, 07:08 PM Thread Starter
vinnyabs
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Would it have jump started yesterday with a bad ignition switch? With no power to coil in on position, and all connections checked, I guess it's either the switch or the msd right?

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post #9 of Old 08-24-2013, 07:14 PM Thread Starter
vinnyabs
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I also get light on the circuit tester on the starter pole on the solenoid when the key is turned to start. But still nothing at positive terminal of coil. Is that the msd by elimination? I sure friggin hope not. Plus how would it have driven home if the msd wasn't firing the cylinders? I am completely confused!

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post #10 of Old 08-24-2013, 07:14 PM
Mace350
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Clean your negative battery cable where it bolts to the Jeep
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post #11 of Old 08-24-2013, 07:17 PM Thread Starter
vinnyabs
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Please guys. It is a brand new rebuilt engine. It doesn't get any cleaner. And I have said I have good power to everything else just not the coil. I appreciate any an all help but this is a desperate situation and that has been suggested and reported done already.

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post #12 of Old 08-24-2013, 08:36 PM Thread Starter
vinnyabs
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Any electric gurus? Streak, Hammer?

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post #13 of Old 08-24-2013, 08:59 PM
LumpyGrits
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Mount you batteries' main ground to the top mounting bolt of your starter.
You may be loos'n volts via the alt.
Disconnect the alt at night, and see if the battery will hold charge.
Next night with a fully charged battery. Disco the POS(+)battery cable. Does it hold charge?
LG

Have'n you along, is like loose'n 2 good men
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post #14 of Old 08-24-2013, 09:15 PM Thread Starter
vinnyabs
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Thanks LG. I'll give it a try. So stressed and confused at this point…

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post #15 of Old 08-24-2013, 09:33 PM
86cj74.2L
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Do you have a neutral safety switch on trans or a clutch depressed switch.

If you have no power to the coil in the on position you need to see if power is going to the switch. A test light is easy and cheep.

If you have no power to the switch its time to look at the bulkhead connector. And or the battery's cabling etc.

a crappy ground or grounds will look like all sorts of things its not.
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