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I have a 1982 ford 800 with a 429 gas motor. It will not

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start, I cannot get 12v...
I have a 1982 ford 800 with a 429 gas motor. It will not start, I cannot get 12v at the coil with key on. I know I must have 12v at the coil before I can get a spark. I have changed the coil, ECM, & the ignition switch. Help
Submitted: 2 years ago.Category: Ford
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Answered in 32 minutes by:
10/26/2015
Ford Mechanic: roy, import/domestic specialest replied 2 years ago
roy
roy, import/domestic specialest
Category: Ford
Satisfied Customers: 6,729
Experience: ASE master tech for 40 years
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good afternoon my name is ***** ***** I will assist

there should be 12 volts at the positive side of the coil with the key on. the power comes from the ignition switch. since you replaced the switch, you most likely have a broken wire between the switch and coil.

Roy

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Customer reply replied 2 years ago
That was my line of thinking, so I ran a hot jumper to the .+ on coil and I still cannot get a spark. Any ideas
Ford Mechanic: roy, import/domestic specialest replied 2 years ago

ok, do you have points or electronic ignition???

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Customer reply replied 2 years ago
Electronic
Ford Mechanic: roy, import/domestic specialest replied 2 years ago

ok, with 12 volts on the positive, you should have 12 volts on the negative side of the coil too. if you do, then crank the motor and use a test light on the negative side and it should flash while cranking. if it does not, then you need a module and pick up coil. if it does then the coil is bad.

Roy

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Ron
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