82 CJ7 Electrical Problem; CJ not turning over.. not cranking - JeepForum.com

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post #1 of 16 Old 07-17-2010, 01:50 PM Thread Starter
jeepdude1107
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82 CJ7 Electrical Problem; CJ not turning over.. not cranking

I've been having issues with my CJ not turning over. I have replaced the starter and the solenoid. The battery is also charged. There is no clicking against the flywheel from the starter, so the starter must not be getting any power. I am going to replace the battery cables just in case they went bad, but wanted to see if anybody had any other ideas.

Thanks!


1982 CJ7
2" Rough Country Suspension Lift
31" x 10.5" Tires
15" American Racing Alloy Wheels
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post #2 of 16 Old 07-17-2010, 01:56 PM
keith460
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Always check the ground connections on a Jeep CJ. They are notorious for causing problems in the electrical system. Check the ground connection to the engine block from the battery and makes sure the starter solenoid is well grounded to the passenger side fender well.

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post #3 of 16 Old 07-17-2010, 03:36 PM Thread Starter
jeepdude1107
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Thanks for the reply.

I replaced the battery cables and the cabe from the solenoid to the starter and cleaned all connections while I was at it.

Also, the headlights are not dimming when I turn the ignition. Does this mean that the solenoid could be bad or not wired correctly??? I have replaced it twice since this has been going on, but it seems like everything points toward the solenoid.

All the fuses look good as well. Is there anything else in particular I should look closer at?

1982 CJ7
2" Rough Country Suspension Lift
31" x 10.5" Tires
15" American Racing Alloy Wheels
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post #4 of 16 Old 07-17-2010, 05:00 PM
keith460
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Got a voltage tester?

Check for voltage at the solenoid. You should have 12V from the + terminal where the battery cable hooks up to the base of the solenoid (ground), and "I" terminal, small post. Turn the key to crank the engine and you should have 12V at both small posts of the solenoid too. That will energize the coil of the solenoid and allow the flow of electricity from the battery hook up post to the other large post that goes to the starter.

Since your profile is not filled out I'll ask if your CJ-7 is an automatic or manual transmission? Automatic transmissions have a neutral safety switch that is wired to the starter solenoid and won't allow it to energize unless the transmission is in either PARK or NEUTRAL.


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Last edited by keith460; 07-18-2010 at 03:51 AM.
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post #5 of 16 Old 07-18-2010, 08:26 AM Thread Starter
jeepdude1107
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I do have and automatic transmission. Where is the neutral safety switch located?

1982 CJ7
2" Rough Country Suspension Lift
31" x 10.5" Tires
15" American Racing Alloy Wheels
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post #6 of 16 Old 07-18-2010, 08:42 AM
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Ah... just went through this myself last weekend. My NS switch crapped out so I bypassed it so I could drive. If you have TF999, the NS switch is near the shift selector level on the trans. The center pin provides a ground path to the solenoid when in park and neutral. That pin connects to the "third" connection under the solenoid (looks like the S and I connections but is underneath the solenoid). The two outside pins are for your reverse lights. The harness connects to the right of the battery and down a little bit. Shoud have wires Orange (4WD light), Black (NS ground), and a Red and White wire (reverse lights).

To get mine going for now I jumped a wire to ground on the ground connection of the solenoid. My problem is I think the selector is busted inside the trans and not contacting my NS switch.

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post #7 of 16 Old 07-18-2010, 08:55 AM Thread Starter
jeepdude1107
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Sweet Thanks. I found it. So to jump it...you connected a ground wire from the bottom contact point on the solenoid to the base of the solenoid?

1982 CJ7
2" Rough Country Suspension Lift
31" x 10.5" Tires
15" American Racing Alloy Wheels
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post #8 of 16 Old 07-18-2010, 09:01 AM
VACJ7
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yeah.... I have a dedicated ground post on my fender and jumped over to it. Keep in mind this is not the safest thing to do since it will now start in gear. Do your reverse lights work?
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post #9 of 16 Old 07-18-2010, 09:43 AM
ErikEastman
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Be really careful when messing around with your starter wiring, especially if you are under the rig. Double check to make sure your e-brake is on and it is out of gear.
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post #10 of 16 Old 07-18-2010, 10:45 AM Thread Starter
jeepdude1107
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I dedicated a ground from the solenoid to the fender. It is now turning over. It has been sitting for quite some time, so I haven't gotten it to start yet. I think the gas may have leaked out during this time. I put some in and I am getting some to go through the line and the pump. Is there anything to help feed the fuel line to atleast get it started?

Thanks for all the help!

1982 CJ7
2" Rough Country Suspension Lift
31" x 10.5" Tires
15" American Racing Alloy Wheels
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post #11 of 16 Old 07-18-2010, 11:50 AM Thread Starter
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Another note....I don't think I am getting a spark....could this be the coil or distributor cap? Anyway to test?

1982 CJ7
2" Rough Country Suspension Lift
31" x 10.5" Tires
15" American Racing Alloy Wheels
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post #12 of 16 Old 07-18-2010, 11:56 AM
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There are a bunch of tests for no spark. Search here for "no spark". Jeep Hammer has test procedures somewhere to help determine the problem. Once you get spark, starter fluid down the throat of the carb will help it fire to draw gas through the system. Assuming filter is not clogged or a host of other things!
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post #13 of 16 Old 07-18-2010, 02:04 PM Thread Starter
jeepdude1107
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I'm not getting it to fire with the starting fluid either. It sounds like it is trying just a little bit. I am either getting no spark or a very weak one. No problem with this before though...

1982 CJ7
2" Rough Country Suspension Lift
31" x 10.5" Tires
15" American Racing Alloy Wheels
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post #14 of 16 Old 05-16-2015, 05:44 PM
wareboy5
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I am just starting out rebuilding a 1982 CJ7 and have been using this forum to help me out along the way. I was looking to buy a new starter solenoid and I went on the auto zone website and it's showing 2 different ones. One for a manual and one for an automatic. Is there a difference?
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post #15 of 16 Old 05-17-2015, 06:48 AM
keith460
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Yes, the automatic version will have an additional wiring post for the neutral safety switch. The manual version only has two post to energize the coil.
The automatic solenoid grounds through the safety switch and the manual version is just grounded at the fender mount. Either case, neither one will energize if the ground path is not complete.

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battery cable , battery terminal , clicking , cranking , electrical , fuses , solenoid , starter , starting

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