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Unread 09-30-2014, 01:04 PM   #1
jjgrow
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1986 CJ7 
 
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engine won't shut off

Just replaced the starter solenoid, starts fine but doesn't shut off when I turn the key. Gauges all go dark though.

What's up?

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Unread 09-30-2014, 01:09 PM   #2
CrawlingForward
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Was anything rewired before this?

Did everything work just fine before you replaced the solenoid? It should normally have nothing to do with the engine once it's running.

Google the phenomenon known as 'dieseling'.
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Unread 09-30-2014, 05:35 PM   #3
jjgrow
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Nothing changed prior to or after installing the solenoid. And it's not dieseling - just tried it again and now it seems like the starter is remaining engaged.

Is it possible I have the solenoid wired backwards and if so, would that cause this problem?
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Unread 09-30-2014, 05:42 PM   #4
macscal
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Try swapping the small wires. Mine did it too.
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Unread 09-30-2014, 05:52 PM   #5
jjgrow
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tried swapping the little wires but it wouldn't start in that mode.
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Unread 09-30-2014, 06:05 PM   #6
CrankyD
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Make sure the battery is topped of and takes a full charge first. If it hangs and you cant get it to stop engaging yank the positive terminal off the Batt. and whack the inner fender with a hammer around the starter solenoid. The understanding I have is that a weak Batt. will allow the solenoid to open but it stays stuck due to the poor electrical contact.
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Unread 09-30-2014, 06:10 PM   #7
cwig12
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Are you positive the new Starter Solenoid isn't bad? All the grounds back in place?
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Unread 09-30-2014, 06:31 PM   #8
jjgrow
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I'm kinda leaning toward the theory that the new solenoid might be faulty. I saw that my son had removed the innermost nuts from the + and - terminals on the side of the solenoid instead of connecting the battery wires on the outside of them which as a result, allowed the solenoid posts to be loose and move in and out. Even after I reinstalled the nuts correctly, it started smoking so I'm thinking it might have burnt up or something. Popping the little + wire off shut the engine down.

For $19 bucks I guess its not too painful.
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Unread 09-30-2014, 06:40 PM   #9
cwig12
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Mine went bad after I had to disconnect it to pull my grill cover off (winch cables run through), I tried starting it and it struggled so I went to bed. Tried again in the morning and it fired right up so I let it go through it's warm up, everything was fine. I turned the key and it kept running, pulled the terminal on the solenoid to kill it. After some troubleshooting I went and bought a replacement and it fixed my issue and haven't had a problem like it since.
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Unread 09-30-2014, 07:14 PM   #10
CrankyD
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Thats another good point is to make sure it has a good ground through the mounting brackets and back to the tub, and that the tub has good ground. If the starter solenoid has welded itself it may be shot, wait till it cools down then try the hammer trick and you may hear it un-pop.
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Unread 10-01-2014, 04:30 PM   #11
jjgrow
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Replaced the solenoid again and its working fine. Thanks for the help.
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Unread 10-01-2014, 04:42 PM   #12
cwig12
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Glad to hear you got it back to normal again.
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