Starter switch? Issue

RubberDuck

Legacy Registered User
City
Baltimore
State
MD
#1
I’ve got an electrical gremlin on my hands. Parked the jeep and it was just fine. Went to start it later - voltage drops from 12 to 10 on volt meter but won’t crank. I checked the solenoid and it cranks just fine when 12v is applied to the small terminal so it’s not that. Even ran a fresh wire to the wire coming out of the harness on the column. Could I have a bad key switch? Something else?
 

RubberDuck

Legacy Registered User
City
Baltimore
State
MD
#4
I would check the battery. 10 Volts May not be enough to start it. Can you jump start it?
Battery is fine. It cranks and starts just fine if I give power to solenoid manually. What I'm saying is when I turn the key, the volt gauge drops but nothing happens. I checked the grounds on the battery and they seemed fine. If the ground to the engine was bad the starter wouldn't even crank, no? I should also note there are zero volts when key is turned on the small keyed power post on the solenoid.
 
Last edited:

Randyzzz

Blown Budget
LIFETIME
CJ-8.com Member
SOA Member
City
Redmond
State
OR
#5
Battery is fine. It cranks and starts just fine if I give power to solenoid manually. What I'm saying is when I turn the key, the volt gauge drops but nothing happens. I checked the grounds on the battery and they seemed fine. If the ground to the engine was bad the starter wouldn't even crank, no? I should also note there are zero volts when key is turned on the small keyed power post on the solenoid.
Sounds like the ignition switch on the column. They’re not too hard to change.
 

Randyzzz

Blown Budget
LIFETIME
CJ-8.com Member
SOA Member
City
Redmond
State
OR
#7
I’m not by my wiring diagrams, but I you need to use a test light and see if there is power at the terminal on the ignition switch that feeds the solenoid trigger. If there’s power at the switch, but not the solenoid- wiring issue. If there’s no power at the switch- switch issue.

Found one online. You want to check for power at the blue wire with the key in the start position. The red wire is the feed from the battery. FFAAEC7E-7476-4ED4-8F44-D173D1FEEF42.jpeg
 

Spieg

Scrambler Junkie
LIFETIME
CJ-8.com Member
City
Aurora
State
CO
#10
The switch mounting holes are slotted to allow a little adjustment of the switch position. If the rod is is worn, you can probably move the switch a little to get it working again.
 

Randyzzz

Blown Budget
LIFETIME
CJ-8.com Member
SOA Member
City
Redmond
State
OR
#11
The switch mounting holes are slotted to allow a little adjustment of the switch position. If the rod is is worn, you can probably move the switch a little to get it working again.
Or- the screws could be loose and the switch moved not allowing it to hit the start position.
 

RubberDuck

Legacy Registered User
City
Baltimore
State
MD
#12
Forgot to circle back here with the solution - it indeed was the rod - I had to tweak it a bit, it wasn't pushing the starter switch quite far enough to fully contact. Thanks everyone! Hopefully this helps someone else.
 
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