1984 IGNITION PROBLEM
09-14-2018
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1984 IGNITION PROBLEM
1984 F150 XLT 302 4 SP: TRUCK HAS BEEN STORED IN BARN 20 YEARS, NOT STARTED
COIL HAS FIRE WHEN KEY ON BUT WHEN TURN TO CRANK, SPARK DISAPPEARS EXCEPT WHEN YOU RELEASE KEY FROM CRANKING. I HOT WIRED TO COIL AND IT GROUNDS OUT SPARK WHEN YOU CRANK TOO. COIL HAS 12 VOLT WHEN IGNITION IN ON POSITION. TRIED A NEW COIL AND SAME RESULTS. NO SPARK TO PLUGS AT ALL, NOT EVEN FROM COIL TO SPARK PLUG WIRE WITH NEW PLUG GROUNDED TO FRAME. OH YES....ACCIDENTALLY FOUND OUT SPARK TO PLUG WHEN KEY ON POSITION. SHOCKED ME...OH YA!!!
SELINOID HAD A THERMOLINK BURNED OUT FROM MISCONNECTION YEARS AGO AND I FIXED THAT. IT SEEMS TO ME THAT SHORT IN WIRE WHEN ENGAGING STARTER, MAY BE WIRE IN COLUMN SWITCH AREA. CLEANED DIST PICKUP, NEW ROTOR N CAP N SPARK PLUG WIRES, NEW BRAIN BOX AND NEW SELINOID. MECHANIC FRIEND SAID GET NEW PICK UP IN DISTRIBUTOR SO GOT A COMPLETE NEW DISTRIBUTOR TO R&R, NOT IN YET. IF ANYONE HAS A CLUE WHAT'S GOING ON PLEASE RESPOND. THANK YOU ! THOMAS
COIL HAS FIRE WHEN KEY ON BUT WHEN TURN TO CRANK, SPARK DISAPPEARS EXCEPT WHEN YOU RELEASE KEY FROM CRANKING. I HOT WIRED TO COIL AND IT GROUNDS OUT SPARK WHEN YOU CRANK TOO. COIL HAS 12 VOLT WHEN IGNITION IN ON POSITION. TRIED A NEW COIL AND SAME RESULTS. NO SPARK TO PLUGS AT ALL, NOT EVEN FROM COIL TO SPARK PLUG WIRE WITH NEW PLUG GROUNDED TO FRAME. OH YES....ACCIDENTALLY FOUND OUT SPARK TO PLUG WHEN KEY ON POSITION. SHOCKED ME...OH YA!!!
SELINOID HAD A THERMOLINK BURNED OUT FROM MISCONNECTION YEARS AGO AND I FIXED THAT. IT SEEMS TO ME THAT SHORT IN WIRE WHEN ENGAGING STARTER, MAY BE WIRE IN COLUMN SWITCH AREA. CLEANED DIST PICKUP, NEW ROTOR N CAP N SPARK PLUG WIRES, NEW BRAIN BOX AND NEW SELINOID. MECHANIC FRIEND SAID GET NEW PICK UP IN DISTRIBUTOR SO GOT A COMPLETE NEW DISTRIBUTOR TO R&R, NOT IN YET. IF ANYONE HAS A CLUE WHAT'S GOING ON PLEASE RESPOND. THANK YOU ! THOMAS
Last edited by ardmsrt; 09-18-2018 at 01:54 AM. Reason: MORE INFO
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