1983 Jeep CJ7 Ignition Coil Failure

MIKEYG

MEMBER
1983 JEEP CJ7

Electrical problem
1983 Jeep CJ7 6 cyl Four Wheel Drive Manual 120K miles

Recently after driving my 1983 Jeep CJ7 for a while the Ignition Coil gets very hot and will quit working. The motor will run rough and bog down then die. It will not start again until the coil has cooled down. If I put a cold replacement coil in it will fire right up. What could be causing the coil to overheat? The engine temp gauge reads normal temp when this happens.

I have checked the + and - wires to the coil and they are hooked up correctly.

Thank You in advance for your help,

Mike Glidden
Littleton, CO

11 Replies

RASMATAZ

MECHANIC
75,992 POSTS

What is the battery voltage on the positive side of the coil also does it have a condenser/capacitor on it.

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Monday, January 19th, 2009 AT 7:06 PM

DMCAGLE

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6 POSTS

My cj7 was running fine but when I turned ignition off it kept running so I pulled coil wire now it wont start back up.

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Wednesday, September 26th, 2012 AT 7:50 PM

CJ MEDEVAC

MECHANIC
11,004 POSTS

OK BUDDY

I'M HERE FOR THE LONG HAUL.....SEE OTHER CJ ANSWERS IN THE "5" AND "7" FORUMS...YOU'LL UNDERSTAND

DO YOU KNOW YOUR STUFF? OR ARE YOU A BEGINNER?

DO YOU HAVE A REPAIR MANUAL?

https://www.2carpros.com/questions/2007-ford-taurus-tune-up

A VOLTMETER?

PLAY WELL WITH OTHERS?

ABLE TO UNDERSTAND AND DO TESTING ON YOUR END?

TELL ME ANY MODIFICATIONS YOU HAVE DONE......EVEN NICE PICS FROM UNDER THE HOOD WOULD BE NICE

LAST QUESTION....THIS IS A DOOZIE!

DO YOU REALLY LOVE YOUR JEEP?

MEGA DETAIL IS APPRECIATED...HELPS ME A LOT!

THE MEDIC

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Wednesday, September 26th, 2012 AT 8:18 PM

DMCAGLE

MEMBER
6 POSTS

Obviously I know a little I fixed the issue. Ignition switch and coil went out

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Saturday, September 29th, 2012 AT 7:46 AM

CJ MEDEVAC

MECHANIC
11,004 POSTS

THINK THE COIL COULDA BEEN THE WRONG TYPE?

SEE MY ANSWER ON DECEMBER 3rd, 2011 IN THIS POST

https://www.2carpros.com/questions/1982-jeep-cj7-ignition-problem-spark-distributor-cap

GLAD YOU GOT HIM SQUARED AWAY

THE MEDIC

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Saturday, September 29th, 2012 AT 9:42 AM

DMCAGLE

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6 POSTS

Ehh doubt it was the wrong type it has been on there for the past ten years or so.

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Sunday, September 30th, 2012 AT 4:57 PM

CJ MEDEVAC

MECHANIC
11,004 POSTS

SO ARE YOU FIXED. OR WANT MORE INPUT?

SEE-UNS HOW YOU JUMPED ONTO ANOTHER POST (WHICH WAS FINE BY ME). MORE INFO ON YOUR JEEP WOULD BE NICE

I'M JUST HERE TO ASSIST YOU. TELL ME MORE OF WHAT'S BEEN DONE

THE MEDIC

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Sunday, September 30th, 2012 AT 7:05 PM

DMCAGLE

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6 POSTS

Thank you for your help im back on the road I'll try to upload some pics

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Monday, October 1st, 2012 AT 11:56 AM

CJ MEDEVAC

MECHANIC
11,004 POSTS

NO PROBLEM

---I REALLY ENJOY HELPIN' OTHER CJ GUYS AND GALS. GIVES ME A WARM FUZZY WHEN I GET A THANKS (I USED TO BE LOST WITH THIS STUFF MYSELF)

WAITIN' ON YOUR PICS

POST 'EM HERE AT THIS POST

THE MEDIC

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Wednesday, October 10th, 2012 AT 3:50 AM

DAVY KEITH

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33 POSTS

Hey CJ Medevac need some help with with my 1978 CJ7. Posted on another thread but will post here too in hopes of reaching you. No spark. It was running fine until a few days ago. I've spent two days doing diagnostics but still hitting a brick wall. Can fill you in on the details if I can reach you. Thanks!

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Monday, November 28th, 2016 AT 5:28 PM

CJ MEDEVAC