fusible link???? - Ford Truck Enthusiasts Forums

Notices
1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

fusible link????

 
  #1  
Old 07-11-2011, 09:00 AM
tchopper1969
tchopper1969 is offline
Junior User
Thread Starter
Join Date: Dec 2010
Location: florida
Posts: 51
tchopper1969 is starting off with a positive reputation.
fusible link????

found myself between a rock and a hard place this past weekend on my slick. drove it to a gas station about an hour and a half away from the house (gas station was closed) went to crank my truck back up and NOTHING. wouldn't do a thing, no lights, nothing. someone mentioned a fusible link could be the problem but i checked all i could and couldn't find it. key off, 12.78 volts at the battery, starter solenoid, ignition switch, and fuse block. turn the key on, and it drops down to 2.8-3 volts. any ideas
 
  #2  
Old 07-11-2011, 09:14 AM
66f-100's Avatar
66f-100
66f-100 is offline
Elder User
Join Date: Apr 2008
Location: Montpelier, VA
Posts: 619
66f-100 is starting off with a positive reputation.
I've had the same thing happen and it was a poor ground connection where the ground cable bolts to the engine block. Took it off, cleaned it up and the truck fired right up.
 
  #3  
Old 07-11-2011, 09:18 AM
tchopper1969
tchopper1969 is offline
Junior User
Thread Starter
Join Date: Dec 2010
Location: florida
Posts: 51
tchopper1969 is starting off with a positive reputation.
unfortunately i have already tried that one also. i actually cut the end off of the cable that bolts to the block and put a new one on since it was wallered out a lil bit. still nothing
 
  #4  
Old 07-11-2011, 09:24 AM
garbz2's Avatar
garbz2
garbz2 is offline
Post Fiend
Join Date: Nov 2000
Location: Glendale Arizona
Posts: 6,043
garbz2 is a name known to allgarbz2 is a name known to allgarbz2 is a name known to allgarbz2 is a name known to allgarbz2 is a name known to allgarbz2 is a name known to all
There is a resistor wire in the harness. there is no fusiable links in a 61 to 66 harness.

The resistor wire is installed from the ignition run side of the switch to the firewall plug and is pink in color. It drops form 12 at crank to 9 at run for the points ignition and coil.

Look to the primary power wire Black with yellow stripe from the selonoid to the firewall and check the firewall plug itself as they corrode and fail this will cause a what you describe as the connection fails under load.

Garbz
 
  #5  
Old 07-11-2011, 09:51 AM
tchopper1969
tchopper1969 is offline
Junior User
Thread Starter
Join Date: Dec 2010
Location: florida
Posts: 51
tchopper1969 is starting off with a positive reputation.
the firewall plug is nice and tight with no corrosion. also the wires have tested and appear to be good. still no luck. was thinking that it might be the ignition switch...
 
  #6  
Old 07-11-2011, 10:37 AM
Dugan5150's Avatar
Dugan5150
Dugan5150 is offline
Senior User
Join Date: Sep 2010
Location: Hendricks County, Indiana
Posts: 102
Dugan5150 is starting off with a positive reputation.
It's possible that your battery is fine until it's under a load. Lots of bad batteries show a full charge, then as soon as something puts a draw on it, especially a starter, but it's possible it could happen just turning on the switch (especially in hot weather). I would grab a good battery out of something else and see if it still happens or take the one out of your truck to a parts store to have it tested (autozone, advance, and o'rielly all do that around where I live). No guarantee it will be something that simple, but I've seen it happen to a lot of people. When batteries go bad in the heat of summer, they sometimes look just fine when they're not under a load/voltage draw.
 
  #7  
Old 07-11-2011, 11:01 AM
daveengelson
daveengelson is offline
Post Fiend
Join Date: Aug 2003
Location: Ca
Posts: 5,788
daveengelson has a good reputation on FTE.daveengelson has a good reputation on FTE.daveengelson has a good reputation on FTE.
Appears member's have already listed few possible resolutions, if the truck has an 'alt' guage suggest check connections thru the entire circuit.
 
  #8  
Old 07-11-2011, 11:06 AM
daveengelson
daveengelson is offline
Post Fiend
Join Date: Aug 2003
Location: Ca
Posts: 5,788
daveengelson has a good reputation on FTE.daveengelson has a good reputation on FTE.daveengelson has a good reputation on FTE.
Appears member's have listed several possible causes; if the truck has an 'alt' guage if it could'nt be a bad connection, suggest checking connections thru entire circuit.
 
  #9  
Old 07-11-2011, 02:17 PM
NumberDummy's Avatar
NumberDummy
NumberDummy is offline
Ford Parts Specialist
Join Date: Nov 2006
Location: Simi Valley, CA
Posts: 81,269
NumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputation
Originally Posted by garbz2 View Post
There is a resistor wire in the harness. there is no fusable links in a 61 to 66 harness.

The resistor wire is installed from the ignition run side of the switch to the firewall plug and is pink in color. It drops from 12 at crank to 9 at run for the points ignition and coil.
COLF-12250-A .. Resistor Wire-Ignition Coil (Motorcraft DY-37) / Obsolete / Dozens available NOS from FoMoCo Dealers/obsolete parts vendors.

61.49" long / Color coded Pink / 1.30-1.40 ohms resistance / #16 gauge wire.

Applications: Myriad 1960/86 FoMoCo vehicles.
 
  #10  
Old 07-11-2011, 04:10 PM
garbz2's Avatar
garbz2
garbz2 is offline
Post Fiend
Join Date: Nov 2000
Location: Glendale Arizona
Posts: 6,043
garbz2 is a name known to allgarbz2 is a name known to allgarbz2 is a name known to allgarbz2 is a name known to allgarbz2 is a name known to allgarbz2 is a name known to all
Originally Posted by tchopper1969 View Post
the firewall plug is nice and tight with no corrosion. also the wires have tested and appear to be good. still no luck. was thinking that it might be the ignition switch...
Pull the connection apart and check the actual pins. It may seem tight but the corrosion is internal. I have had nine out of ten fail in this area.

Garbz
 
  #11  
Old 07-11-2011, 05:51 PM
Broomfieldbum's Avatar
Broomfieldbum
Broomfieldbum is offline
Posting Guru
Join Date: Mar 2005
Location: Broomfield Colorado
Posts: 1,092
Broomfieldbum is gaining momentum as a positive member of FTE.
If you have power at the battery, and power to the solenoid, then I would try jumping across the solenoid, and see if it starts. If you have a wire connecting power to the i small terminal, and you use a large wire, or channel locks to jump power to the S small terminal, then truck should at least crank. If not you definitely have a battery issue. This system takes everything out of the equation except the battery.
 
  #12  
Old 07-11-2011, 06:10 PM
StevenhF100's Avatar
StevenhF100
StevenhF100 is offline
Senior User
Join Date: Dec 2009
Location: Central Oregon
Posts: 313
StevenhF100 is starting off with a positive reputation.
Another wire to check is the wire that goes from the hot side of the starter solenoid forward to a connection on the inner fender. Make sure the power is coming out of this connection. Happened on my sons truck, we unbolted and cleaned all the wires and put it back together and it started right up. Also need to be sure the wires are not shorting out on the inner fender.
 
  #13  
Old 07-11-2011, 07:31 PM
daveengelson
daveengelson is offline
Post Fiend
Join Date: Aug 2003
Location: Ca
Posts: 5,788
daveengelson has a good reputation on FTE.daveengelson has a good reputation on FTE.daveengelson has a good reputation on FTE.
Wonder if a faulty start solenoid could be the cause for the problem.
 
  #14  
Old 09-05-2011, 02:32 PM
starbuck66
starbuck66 is offline
New User
Join Date: Sep 2011
Posts: 2
starbuck66 is starting off with a positive reputation.
Identical problem

This is almost Identical to what happened top me a few days ago. I have a 1961 F250 Unibody. Truck was cranking just fine, then a click, and nothing. Not One thing electric works. Generally if a battery is weak other electrical things like lights will work just a little but this is like someone pulled the battery. And I also put a meter on the battery and get 12.8V and when I turn the ignition to the on position I get around 3V. This must have happened to others? Our stories are too similar. Help Please

Originally Posted by tchopper1969 View Post
found myself between a rock and a hard place this past weekend on my slick. drove it to a gas station about an hour and a half away from the house (gas station was closed) went to crank my truck back up and NOTHING. wouldn't do a thing, no lights, nothing. someone mentioned a fusible link could be the problem but i checked all i could and couldn't find it. key off, 12.78 volts at the battery, starter solenoid, ignition switch, and fuse block. turn the key on, and it drops down to 2.8-3 volts. any ideas
 
  #15  
Old 09-05-2011, 03:18 PM
gfw1985's Avatar
gfw1985
gfw1985 is offline
Cranky Old Guy
Join Date: Mar 2008
Location: Raphine, Virginia
Posts: 3,565
gfw1985 is a name known to allgfw1985 is a name known to allgfw1985 is a name known to allgfw1985 is a name known to allgfw1985 is a name known to allgfw1985 is a name known to all
As already stated, eliminate the battery as a possible cause. Ground has been checked, check the pos cable too. Possibilty vehicle was not charging and you were running off the battery. Batteries do funny things anymore. I have had them go shorted and you cannot even jump start them when that happens. No warning what so ever.
 

Thread Tools
Search this Thread
Quick Reply: fusible link????


Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.