Starter Problem

Guys, I have a 1970 CJ-5 dauntless V-6. I've had an intermittent starter problem for some time. I turn the key over and no solenoid engagement. I thought it was the starter so I replaced it. Now it still won't turn over. I'm showing 6-7 volts at the control wire terminal of the starter when I turn the engine over and I don't even hear the solenoid click. However I can jumper the starter and it will turn the engine over. Any help would be much appreciated. Thanks in advance.

Jason

 

Solenoid is on the starter? Bad "new" starter Solenoid?

 

bad ignition switch?

 

I have the same problem on my 70 model. I am thinking there should be more than 7 volts on the control wire terminal on the solenoid. I changed the ignition switch and the voltage increased to 9 volts.....improved to working intermittently

Somewhere high resistance is eating up voltage.

Richard

 

Solenoid is on the starter and the solenoid/starter has just been replaced. I can jumper the solenoid terminals and the engine will start.

 

I'm guessing that could be it.

Hmmm... it sounds like I have a similar problem.

 

If you have the Delco starter then be aware the solenoid draws a considerable amount of current to latch the solenoid. Run another wire along with the start wire existing and see if that works.

 

Ayuh,..... Clean to shiny metal Clean, both ends of both battery cables,....

You've got some severe corrosion, somewhere,....

 

that was my first thought as well...dont rule out corrosion in the ignition switch as well

 

Thanks for the reply. Sounds logical.

 

Thanks man.

 

I've the same issue on my 69, only I get draw down to 6.5v at the starter. Jumps with no issue, no action with the ignition. Even new ignition switch wouldn't work.

 

I had the same problem when I first got jeep . start no start . test light showed it was getting 12V at S terminal
but wouldn't crank . did something I learned from being around VW's in my younger days
VW bugs were notorious for no start . mainly cause starter switch wire to starter solenoid was so long
added a ford starter solenoid to the GM starter solenoid . switch wire goes to ford solenoid . 10g wires from battery post on GM starter to ford solenoid to feed the S terminal on GM solenoid .never had a problem with it starting in over 40 years

 

Check the engine bay harness plug. I had an issue there with snowshoe.

 

This.
This seems to be a "common" issue with the V6. It seems the ignition wire is either too long, too small, or a combination of both.
Back in the 80's I installed a Ford solenoid on the right fender. Ran the battery cable down to the battery post on the starter and ran a jump wire between the starter post and the battery post and never had another issue.

 

I don't understand what problem you are trying to solve with the Ford solenoid. On first impression, it seems like putting an additional set of contacts in the current path would simply lower the voltage to the starter. Is it a problem with the switch, or with the motor? The Ford solenoid is meant to power the starter motor. If you need a boost for the solenoid winding, I'd suggest a Bosch-type relay. 30 amps direct from the battery should be plenty, if the current from the ignition switch is insufficient.

I'd also comment that those GM starter-mounted solenoids are failure prone. I would not hesitate to replace it with the best quality one I could find. https://www.rockauto.com/en/moreinfo.php?pk=42688&cc=1029833&pt=4188&jsn=473

 

Intermittent starting issues. Turn the key and sometimes nothing. I went over my system and couldn't find any issues. Wound up adding the
Ford solenoid and never had another problem.

 

Gold-plated version: https://www.parts-express.com/12-VDC-Waterproof-5-Pin-Relay-SPDT-30-40A-with-Metal-Bracket-330-079
They have one for 97c that would work too. Would have the same effect as the Ford part.