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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

starting troubles

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Old Dec 14, 2009 | 11:07 PM
  #16  
70sfordguy's Avatar
70sfordguy
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From: Canada
where was the ground connected on the starter?
disconnect it and use a test light from + on the battery to that wire.
It should be 12volts
then test from that wire - to the small wire on the solenoid +....it should be 12 volts when you turn the key to start.
If yes than that wire is a ground and should be connected to the block.
If you have 2 small wires on the solenoid the one closest to the battery side is from the key switch.The other runs the fuel pump during cranking.
The large terminals are + 12volts from the battery thru the solenoid to the starter.
 
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Old Dec 16, 2009 | 05:45 AM
  #17  
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88-150
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From: Liverpool, NY
i have like a gillion wires running here lol. I've got a thick positive running to the solenoid along with 2 thin wires that goes into a harnes. Then theres the thin wire that trails off into the unknown that fits on one of the posts(i'm guessing it's for the column switch) then theres the thick positive cable that comes off the solenoid to the battery. Then there's the thick negative cable that runs from the negative side of the battery to the ground on the starter/frame(i'm guessing that's what makes the entire vehicle negatively grounded; makes sense).

I put my meter on it and the output is no where near 12v. Digital meter read 3 volts and the analog my dads got read 5 volts. I'm yankin the starter in the morning to make sure it works and they did have a one-post(like the oem one) solenoid there but not sure the difference. Too many choices when it comes to parts o.O
 
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Old Dec 16, 2009 | 05:03 PM
  #18  
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70sfordguy
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From: Canada
Check the voltage at the battery.
Then disconnect the ground at the neg post of the battery and check the battery again.
If you dont get 12v.... charge the battery (with the ground disconnected.)
If you have 12v with the ground off and only 5 with it connected there is a short somewhere.
If the ground sparks when you try to connect it to the battery (key & lights off)
there is a short somewhere.
you can disconnect the 2 small wires on the battery side terminal of the solenoid (they power your lights & ignition/fusebox thru fusable links)
and see if the ground still sparks when you try to connect it.
 
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