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Unread 05-11-2015, 03:36 PM   #1
stvincnt
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Starter ain't un-startin' 79 cj5 258ci

Here's what happened: Turn the key nothing happened , (I have a good strong battery and the starter is about a year old) so I lifted the hood and gave the terminals a whack, Jeep cranked over but starter wouldn't disengage also my coil fuse blew in doing so! My thought was maybe the solenoid . I changed out the solenoid and the same thing happened. After researching I found the the coil fuse is supposed be a 30amp breaker. I had a lower amp breaker in there and boy was it hot. My question is: Does this sound like A. ignition switch on steering column is shot ? or B: Ignition module is shot. ? I'm stumped ! Out of curiosity I took apart the old solenoid and it wasn't fused or ever looked like it fused. Thank you in advance !! The thing I've learned about old jeep's It's ok to throw the inexpensive parts at a problem because your gonna replace em' anyway !!!

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Unread 05-12-2015, 03:29 AM   #2
Attwanl
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Is the starter still getting power to make it stay engaged or is it stuck.
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Unread 05-12-2015, 05:44 AM   #3
stvincnt
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Yes and tuning back the key doesn't stop it. I have to quickly disconect the battery,
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Unread 05-12-2015, 06:07 AM   #4
skizriz
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Happened to me when I had the solonoid backwards. I assume once started the alternator fed power to the solonoid engaging the starter.
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Unread 05-12-2015, 06:18 AM   #5
stvincnt
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Thank you for your reply, My rig was working fine for years . This is something else.
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Unread 05-12-2015, 06:28 AM   #6
Matt1981CJ7
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Remove the red wire from the "i" terminal on the solenoid with the engine off. With the red wire disconnected, if there's 12V at the "I" terminal, the solenoid is shot.

If the red wire is hot with the engine off, then it's likely the ignition switch.

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Unread 05-12-2015, 07:20 AM   #7
orange150
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This happened to me last year, it turned out to be the ignition control module. I would have never guessed that's what it was and actually replaced it chasing another issue.

http://www.jeepforum.com/forum/f8/el...thing-2381377/
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Unread 05-12-2015, 10:55 AM   #8
TIPPEDITOVER
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Quote:
Originally Posted by orange150 View Post
This happened to me last year, it turned out to be the ignition control module. I would have never guessed that's what it was and actually replaced it chasing another issue.

http://www.jeepforum.com/forum/f8/el...thing-2381377/
Good read and good troubleshooting.

So moral of the story, as I take from your experience is, all wiring checked out at the starter solenoid except the blue wire was hot always when the key is in ON position. If so, pull the 2 plugs off the ignition module to see if the voltage disappears. If it does, then replace the ignition control module?




OP, his symptoms were this:

Key turned to ON position, engine began cranking immediately without turning to START position. Was internal short in ICM back-feeding juice to starter solenoid holding it closed any time key in ON position. Seems simple enough. Hope that's all it is.

So OP if your symptoms match all that exactly then you may have a solution.
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What's that strange noise?
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Unread 05-12-2015, 01:44 PM   #9
skizriz
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Quote:
Originally Posted by stvincnt View Post
Thank you for your reply, My rig was working fine for years . This is something else.
My bad, didn't see that it started before you changed the solonoid.

I got nothing then.....
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Unread 05-12-2015, 01:55 PM   #10
stvincnt
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Quote:
Originally Posted by TIPPEDITOVER View Post
Good read and good troubleshooting.

So moral of the story, as I take from your experience is, all wiring checked out at the starter solenoid except the blue wire was hot always when the key is in ON position. If so, pull the 2 plugs off the ignition module to see if the voltage disappears. If it does, then replace the ignition control module?




OP, his symptoms were this:

Key turned to ON position, engine began cranking immediately without turning to START position. Was internal short in ICM back-feeding juice to starter solenoid holding it closed any time key in ON position. Seems simple enough. Hope that's all it is.

So OP if your symptoms match all that exactly then you may have a solution.
Thanks for the replies, i'm gonna guess it's the ignition mod, I've fried them before Probably because I was using a low amp fuse for the coil at the fuse block
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Unread 06-01-2015, 03:55 PM   #11
stvincnt
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OK Thanks for all the replies. Sooooooo I just got around to tackling my ignition problems , here's what I've done: Replaced ignition switch on column , no change. Replaced starter, no change. Replaced ignition module, no change. I'm freekin stumped. Ive also read that a dying battery could cause this problem, would this be true even if I was do a supplemental jump from another vehicle
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Unread 06-02-2015, 02:54 AM   #12
Matt1981CJ7
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Quote:
Originally Posted by stvincnt View Post
OK Thanks for all the replies. Sooooooo I just got around to tackling my ignition problems , here's what I've done: Replaced ignition switch on column , no change. Replaced starter, no change. Replaced ignition module, no change. I'm freekin stumped. Ive also read that a dying battery could cause this problem, would this be true even if I was do a supplemental jump from another vehicle
I think it's time to stop throwing parts at it, and find the actual problem.

How did the teeth on the old starter and flywheel look? Does your bell-housing have both alignment pins?

Did you do the test I described earlier? What was the results?

Matt
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Unread 06-02-2015, 04:35 AM   #13
Mike Romain
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Quote:
Originally Posted by stvincnt View Post
OK Thanks for all the replies. Sooooooo I just got around to tackling my ignition problems , here's what I've done: Replaced ignition switch on column , no change. Replaced starter, no change. Replaced ignition module, no change. I'm freekin stumped. Ive also read that a dying battery could cause this problem, would this be true even if I was do a supplemental jump from another vehicle
If the battery has a bad cell it can suck the power from a boost sometimes. Time to test it.
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Unread 06-02-2015, 10:00 AM   #14
stvincnt
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Quote:
Originally Posted by Matt1981CJ7 View Post
I think it's time to stop throwing parts at it, and find the actual problem.

How did the teeth on the old starter and flywheel look? Does your bell-housing have both alignment pins?

Did you do the test I described earlier? What was the results?

Matt
Matt yes thank you for that. I did do your test and both came up 0 volts, I'm assuming you mean with the key in the RUN position. None the less I did the test with the key off and still 0 volts. Currently my battery is showing 12.25 volts .It's been over taxed without being charged so I've been jumping it to turn it over, Needles to say I don't want to keep on testing and scrambling to undo the battery cable. I also what to mention that I've gone through a few 30 Amp fuses at the coil on the fuse block. I'm almost positive the flywheel is fine I gave a look at the teeth and the look sharp and unworn, as for alignment pins I don't remember having those when I bolted the starter on. BTW I tested my ignition coil it read .8 ohms at primary and 11,700 ohms on secondary. I know this has nothing to do with my problem but I had to do it anyway
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Unread 06-02-2015, 11:54 AM   #15
Mlaughlin8
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Same thing was happening to me a while back... I was blowing coil fuses like crazy... I replaced everything electrical. Nothing worked, kept blowing fuses,. Turned out it was a bad cell in the battery.... Replaced the battery and it hasn't happened yet!
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