motorcraft solenoid 3 terminal vs 4 terminal - Ford Truck Enthusiasts Forums
 

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
Log In 


1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

motorcraft solenoid 3 terminal vs 4 terminal

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-16-2012, 10:14 PM
RockWVU RockWVU is offline
Senior User
 
Join Date: Oct 2002
Location: Uniontown PA USA
Posts: 259
RockWVU is starting off with a positive reputation.
motorcraft solenoid 3 terminal vs 4 terminal

I needed a new starter solenoid for my 1986 f350 460 with elec pumps.
Ford dealer said they had one in stock. I took old one off and start to install the new one.

New one only has one small termminal whereas the old one had two.

The missing one is where the blue wire would go. I think this is for the electric pumps. Is there a way to make this work or do i need to return the part?

The look the same other wise. Two big terminals stacked vertically and the small ones would be on either side of those. The new one just has a "blank" spot on the right side where blue would go.

Thanks
Reply With Quote
  #2  
Old 12-16-2012, 11:57 PM
Swatter's Avatar
Swatter Swatter is offline
Senior User
 
Join Date: Jan 2005
Location: Pittsburgh
Posts: 274
Swatter is starting off with a positive reputation.
The missing "I (Ignition)" terminal sends 12v to the coil when cranking. The coil runs on 7-9 volts but needs 12v when cranking.

I'd think you want to return it for the 4th terminal.
__________________
1985 FORD F-350 PICKUP V8 7.5 Liter 4BBL
Reply With Quote
  #3  
Old 12-17-2012, 08:03 AM
Franklin2's Avatar
Franklin2 Franklin2 is online now
Moderator
 
Join Date: Jan 2001
Location: Staunton VA
Posts: 34,901
Franklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant futureFranklin2 has a brilliant future
You are correct, you need the 4th terminal on your truck for the fuel pump system. It's what primes the system by powering the pumps during cranking. After that, the pumps get their power through the oil pressure switch/relay system. It's the wire in the picture below that goes straight down from the starter relay to the fusible link.

Click the image to open in full size.
__________________
Dave F

1989 F250 XLT Diesel
Reply With Quote
Old 12-17-2012, 08:03 AM
 
 
 
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
Truck still running with key in hand NuMex75 1973 - 1979 F-100 & Larger F-Series Trucks 2 07-31-2014 02:26 PM
WIRING.....Yeah, I got a couple questions wmjoe1953 1948 - 1956 F1, F100 & Larger F-Series Trucks 14 07-16-2009 11:26 PM
Replaced Starter Solenoid and now the Batt. Symbol Flashs. AutoAppearancesInc Aerostar 2 09-28-2008 03:22 PM
Wiring Suggestions... preppypyro Other; Brakes, Electrical, Hitches, Weight Distribution & CDL Discussion 3 04-04-2008 07:38 PM
Electrical mystery. Battery? Altenator? EquineGuy01 Electrical Systems/Wiring 4 11-12-2004 10:05 PM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 08:30 PM.

 

Powered by vBulletin® Version 3.8.7 AC2
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Terms of Service - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup