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Unread 07-13-2003, 01:13 PM   #1
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Join Date: Jul 2003
Posts: 9
CJ5 Starter Issue

I have a 1978 CJ5, the starter solenoid failed and I replaced it with a new one. The issues is that the solenoid will not work. If I apply 12V from the battery it engages. I measured the voltage that is coming to the solenoid and it reads 12v. It's not a ground issue on the solenoid. Could there be a voltage drop somewhere in the ignition circuit?


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Unread 07-13-2003, 04:46 PM   #2
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1978 CJ7 
Join Date: Jan 2003
Location: Lancaster, Pa.
Posts: 1,757
on the sol you have 2 post in the middle s = switch and I = ingition see if you are getting voltage at the s terminal if not back track the wiring to find were you are losing it it is a lt blue wire and ck under the dash for a plug that has a jumper in it it is the neutral safity switch if the plug is not in it will not start eather then to ing switch it self
and make shur the sol is grounded good the case is the ground for the sol
1978 cj-7 had since 1979
401 .030 over- full floating flat top pistons
crower solid cam 292 dur .500/.510 lift
turbo 400 tranny 2500 stall
model 20 transfer case
aj delux glass body
4" lift
dana 30 frount
dana 44 rear
4.56 gears
13.461 @ 92.45 mph on 37" super swampers on 1/4 mile
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Unread 07-13-2003, 04:59 PM   #3
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Thanks Fuzz401...
I do have 12v at the blue wire, but it will not activate the solenoid. If I connect a wire to the '+' terminal of the battery to the selenoid it will activate.
Thats my issue, the blue wire from the ignition (which shows 12V when I put the key switch in start position) will not activate the solenoid. If the blue wire delivers the 12V could there be some loss that makes it to weak at the solenoid?

Very puzzling to me?
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