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1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
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Old Feb 18, 2011 | 06:14 PM
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please help!!!!

i have a 1974 f100 with a 302 in it.and today my altenater went out so i replaced it and when i hooked the batt back up the cylenoid started smoking.so i replaced that and the ignition controll module (brain)and nothing will happen like from inside the truck u get nothing and if you jumpe the starter it turns over but you get no fire..please help..thank you
 
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Old Feb 18, 2011 | 06:26 PM
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Check the fusible link in the wiring harness.
On the battery terminal side of the solenoid there are a couple of small wires hooked to the terminal. One of these is a fusible link, it should have a small plastic tab that says "fusible link 16 ga".
A quick check is to grasp the wire and tug it, if it feels soft or gives, its bad and needs to be replaced.
 
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Old Feb 18, 2011 | 06:37 PM
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will a bad fusible link make it over charge by chance?
 
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Old Feb 18, 2011 | 08:31 PM
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No, the fusible link is just that, inline overload protection. It doesn't have any effect on charge rate.
Most likely cause of overcharging is bad voltage regulator. Second would be a bad battery.
 
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Old Feb 18, 2011 | 08:49 PM
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Voltage regulator is brand new. Actually its the 3rd new one. I know its not the battery cause I put it in the chevy to see and it was fine
 
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Old Feb 19, 2011 | 07:17 PM
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Talking thanks a milllllion

but would it causew it to have all of these symptoms?and now that i think about it that fusable link does feel soft..thanks you a million
 
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