Help! 79 f150 will not crank!
#1
Help! 79 f150 will not crank!
Ok guys, I have a 79 ford f150-460 big block and I cannot get it to crank at all.. I replaced the ignition coil, starter, starter solenoid, ignition module and Im still not getting any spark to my coil. when I took the dash apartI replaced the ignition switch as well, There is 1 red or orange wire that smokes when the key is turned on, I dont know rather my wireing harness is fried or if maybe just the neutral safety switch is bad.
#2
Join Date: Aug 2011
Location: Cave Spring Georgia
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Sounds like you have something wired wrong: check this out and double check your wiring.
1973-1979 Ford Truck Wiring Diagrams & Schematics - FORDification.net
1973-1979 Ford Truck Wiring Diagrams & Schematics - FORDification.net
#3
SMOKING WIRE!
Sounds like something is creating a ground fault and smoking that wire.
Find and fix the smoking wire problem first.
As for the neutral safety switch.
I would dissconnect it, and put a jumper in it place.
*** MAKE SURE THE TRUCK IS IN PARK, AND TRY CRANKING THE ENGINE. ***
IF that solves your problem, buy a new neutral safety switch.
Sounds like something is creating a ground fault and smoking that wire.
Find and fix the smoking wire problem first.
As for the neutral safety switch.
I would dissconnect it, and put a jumper in it place.
*** MAKE SURE THE TRUCK IS IN PARK, AND TRY CRANKING THE ENGINE. ***
IF that solves your problem, buy a new neutral safety switch.
#4
That's the resistor wire, while it's not the cause of your "no crank" issue it does require immediate attention.
It could be the NSS, test as per 'dynamics' instructions above.
If that fails to resolve the issue TEMPORARILY jumper a lead from +bat to +coil, if the engine starts your problem lies in the solenoid and/or the wire between solenoid and coil.
It could be the NSS, test as per 'dynamics' instructions above.
If that fails to resolve the issue TEMPORARILY jumper a lead from +bat to +coil, if the engine starts your problem lies in the solenoid and/or the wire between solenoid and coil.
#5
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