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post #1 of (permalink) Old 08-25-2019, 08:49 PM Thread Starter
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Bumps and Electrical

I am back from a couple of years wandering a fond hello to whomever is still on board!

I would like some thoughts, my Radio ( most suceptable) and sometimes the engine quits when I am on washboard and ruts about 15mph. The radio always quits, the engine stalls about every 10th time. The alt gauge goes to 14+ for 20 sec when the radio returns. The jeep starts immediately after the engine dies

I have 1985 CJ7 with original harness
Removed cleaned and greased all power, grounds, extra ground straps, checked for the the battery and starter solinoid shorting and checked power into the fuse block for shorts. I can shake wires, jump on the jeep and not recreate. Any ideas?

Scott
1985 CJ7 T.H.O.R

"He brought me up out of the pit of destruction, out of the miry clay, And He set my feet upon a rock making my footsteps firm."
-Psalm 40:2
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post #2 of (permalink) Old 08-29-2019, 08:59 AM
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Did you check the connection at the back of the amp gauge. Had that happen on my old cj5 and my cj8 years ago and it just happened to my sons cj5 three weeks ago and melted a bunch of wires together...
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post #3 of (permalink) Old 08-30-2019, 06:55 PM
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Since the engine dies, rather than sputters, but it restarts immediately, I would suspect ignition switch. How heavy is your key ring? Could be heavy enough to be pulling the switch back to off.

To see if itís a poor connection, try turning on everything, radio, heater blower, headlights on high, emergency flashers.

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post #4 of (permalink) Old 08-30-2019, 07:19 PM
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After thinking about it, Iím even more convinced itís the ignition switch. The ignition and accessories are on separate contacts. Sometimes you loose the accessories contact but not always the ignition with it.

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Those who understand binary and those who don't.
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post #5 of (permalink) Old 09-02-2019, 07:48 AM
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Great to see you're still kicking, Scott! Welcome back!

I think Taz is on to it. It could be the switch contacts themselves, or it could also be that the detents are so worn that they let the switch rattle part way between positions. And if you have a heavy key ring you should always take the ignition key off of it when driving - that weight bouncing on the lock mechanism beats those little pins pretty hard.

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Last edited by Jim_Lou; 09-02-2019 at 07:53 AM. Reason: Added thought
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post #6 of (permalink) Old 09-02-2019, 07:53 AM
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Great to see you're still kicking, Scott! Welcome back!

I think Taz is on to it. It could be the switch contacts themselves, or it could also be that the detents are so worn that they let the switch rattle part way between positions.

EVERYTHING's easy for the guy who doesn't have to do it.
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post #7 of (permalink) Old 09-03-2019, 01:35 PM Thread Starter
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Thanks.

I have been suspecting the original ignition switch. I have some things in the column I am going to look at and will just replace the thing then.

Scott
1985 CJ7 T.H.O.R

"He brought me up out of the pit of destruction, out of the miry clay, And He set my feet upon a rock making my footsteps firm."
-Psalm 40:2
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post #8 of (permalink) Old 09-04-2019, 09:51 AM
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My diagnosis reminded me of this story from Popular Science Magazine.

GUS LICKS A WEIGHTY PROBLEM

Your problem is nothing like this with your ignition switch down the column connected by a rod but it still reminded me of the article which I havenít seen since the Ď60s.

Gawd Iím old.

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Those who understand binary and those who don't.
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post #9 of (permalink) Old 09-08-2019, 11:58 AM
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Boy, THAT sure brings back memories! A mighty long story to get to a simple answer, as they all were, but fun and memorable anyway. Thanks!

EVERYTHING's easy for the guy who doesn't have to do it.
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