Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


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

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-23-2012, 11:21 AM
hutch246 hutch246 is offline
Freshman User
 
Join Date: Sep 2012
Posts: 40
hutch246 is starting off with a positive reputation.
Wiring ?

I have a 1985 F150 w/5.0 MPFI and am having wiring problems, specifically a ground problem.
1) Where to locate an accurate wiring diagram. Mitchell's and All-Data are a no go. All-Data is hard to navigate and primitive. Mitchchell's diagram for 85 F150 5.0 has several wrong color codes on diagnostic connection and EEC. Ex: #1 wire to EEC is actually yellow not violet (per Mitchell's). None of the wire color codes on diagnostic connector (per Mitchell's) match my vehicle. Mitchell's wiring diagram for 86 F150 comes closer, but still not dead on.
2) Mitchell's has no table listing physical ground locations. These things can be located anywhere. Anyone know where they are?
I've found ground wire to body at L.H. headlamp, ground lead from battery neg. to wiring harness, and battery to engine ground (at battery neg. terminal)
Where does battery neg. lead that goes into wiring harness go? Is there a common ground for EEC and if so where?
Getting really frustrated. Next step is taking the truck apart.
Reply With Quote
  #2  
Old 09-23-2012, 01:03 PM
Franklin2's Avatar
Franklin2 Franklin2 is online now
Moderator
 
Join Date: Jan 2001
Location: Staunton VA
Posts: 32,608
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
I believe there is a ground from the battery to the EEC harness, and it has a connector in it that likes to corrode.

I see you are using a lot of third party wiring diagrams. Why not get the Ford diagrams? They have all the info you need. You can buy them new if they are in stock at http://www.helminc.com. You might be able to find them used on ebay.
__________________
Dave F

1989 F250 XLT Diesel
Reply With Quote
  #3  
Old 09-23-2012, 01:38 PM
hutch246 hutch246 is offline
Freshman User
 
Join Date: Sep 2012
Posts: 40
hutch246 is starting off with a positive reputation.
Where is the physical location of the connector?
Reply With Quote
  #4  
Old 09-23-2012, 01:40 PM
hutch246 hutch246 is offline
Freshman User
 
Join Date: Sep 2012
Posts: 40
hutch246 is starting off with a positive reputation.
The link that you shared apparently isn't in operation anymore. Just comes up with Solaris and nothing else.
Reply With Quote
  #5  
Old 09-23-2012, 03:03 PM
81-F-150-Explorer 81-F-150-Explorer is offline
Post Fiend
 
Join Date: Jul 2004
Location: Northern California
Posts: 8,791
81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold
Here is a Ford Diagram for 302 with EEC-IV TFI-IV with EFI.

http://i447.photobucket.com/albums/q...VEEC-IV50L.jpg
Reply With Quote
  #6  
Old 09-23-2012, 03:29 PM
Franklin2's Avatar
Franklin2 Franklin2 is online now
Moderator
 
Join Date: Jan 2001
Location: Staunton VA
Posts: 32,608
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
Quote:
Originally Posted by hutch246 View Post
The link that you shared apparently isn't in operation anymore. Just comes up with Solaris and nothing else.
That's interesting. The company that is the authorized publisher for Ford, Honda, GM, etc. is gone. They are either having trouble with their site, or possibly something more serious is happening behind the scenes.
__________________
Dave F

1989 F250 XLT Diesel
Reply With Quote
  #7  
Old 09-23-2012, 03:43 PM
hutch246 hutch246 is offline
Freshman User
 
Join Date: Sep 2012
Posts: 40
hutch246 is starting off with a positive reputation.
On wiring diagrams--color code on diagrams don't match my truck. Color codes on the following are incorrect.
1) diagnostic test connector
2) TFI connection
3) Fuel pump relay
Did they use different wiring harnesses for different assembly plants? Can't find wiring diagram that matches. Impossible to trouble-shoot system.
Need info on where grounds are physically located.
Reply With Quote
  #8  
Old 09-23-2012, 03:54 PM
hutch246 hutch246 is offline
Freshman User
 
Join Date: Sep 2012
Posts: 40
hutch246 is starting off with a positive reputation.
Is there a possibility that this could be a truck manufactured in Canada? How would I find that out?
Reply With Quote
  #9  
Old 09-23-2012, 03:59 PM
Franklin2's Avatar
Franklin2 Franklin2 is online now
Moderator
 
Join Date: Jan 2001
Location: Staunton VA
Posts: 32,608
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
On the diagnostic connector my diagram shows;

black/white as a common power wire

tan/red goes to the computer

tan/lightgreen is the fuel pump wire

white/red is the single wire to trigger the test
__________________
Dave F

1989 F250 XLT Diesel
Reply With Quote
  #10  
Old 09-23-2012, 04:08 PM
81-F-150-Explorer 81-F-150-Explorer is offline
Post Fiend
 
Join Date: Jul 2004
Location: Northern California
Posts: 8,791
81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold81-F-150-Explorer is a splendid one to behold
Quote:
Originally Posted by hutch246 View Post
On wiring diagrams--color code on diagrams don't match my truck. Color codes on the following are incorrect.
1) diagnostic test connector
2) TFI connection
3) Fuel pump relay
Did they use different wiring harnesses for different assembly plants? Can't find wiring diagram that matches. Impossible to trouble-shoot system.
Need info on where grounds are physically located.
No they didn't use different wiring harnesses.

There have been cases where wire colors have been off on certain trucks to the official diagrams.

My Ford Diagram above (posted earlier) matches what Franklin2 is saying here.

Quote:
Originally Posted by Franklin2

On the diagnostic connector my diagram shows;

black/white as a common power wire

tan/red goes to the computer

tan/lightgreen is the fuel pump wire

white/red is the single wire to trigger the test
Quote:
Originally Posted by Hutch246
Is there a possibility that this could be a truck manufactured in Canada? How would I find that out?
Easiest is to look at the vin number. If built in canada it will have the first three positions as 2FT

If USA, 1FT
Reply With Quote
  #11  
Old 09-23-2012, 07:38 PM
85lebaront2's Avatar
85lebaront2 85lebaront2 is offline
Old School Hot Rodder
 
Join Date: Feb 2006
Location: Exmore, VA
Posts: 5,080
85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.
william.a.vose
One of the real problems with the 85-86 5.0L EFI is the entire EFI harness grounds at a two pin connector by the battery that is part on the original ground cable. It corrodes and you lose the ground. The wires in the harness are black with a light green stripe. I would find them where they plug in and put a ring terminal (solder it) on each and connect them directly to the battery negative terminal. This is from my 1986 EVTM. I chased a ground issue on one of these for a week before determining it was that plug, it is C101 on the diagram.
__________________
Bill Vose (Old School Hot Rodder)
1986 F350 crew cab DRW 460ci EEC-V MAF/SEFI, E4OD, PMGR starter, 160 amp 3G alternator, 12X3 1/2 rear brakes, Traction lock 3.55
1995 Lincoln Continental (project car), 1994 Taurus LX (daily driver)
http://www.oldschoolhotrodder.com
"growing old is inevitable, growing up is optional"
Reply With Quote
  #12  
Old 09-23-2012, 07:51 PM
ctubutis's Avatar
ctubutis ctubutis is offline
Moderator
 
Join Date: Nov 2007
Location: Denver Metro Area, CO
Posts: 15,409
ctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputationctubutis has a superb reputation
ctubutis ctubutis ctubutis
Quote:
Originally Posted by Franklin2 View Post
That's interesting. The company that is the authorized publisher for Ford, Honda, GM, etc. is gone. They are either having trouble with their site, or possibly something more serious is happening behind the scenes.
My guess is web server problems; Solvaris is a Web technology company, my guess is Helm is using their products and updating/reconfiguring their systems.

I'd try again tomorrow.
__________________
About the bra
Microsoft is writing software for the kind of people who'd type google into the google search bar to get to google.
http://news.slashdot.org/comments.pl...7&cid=47003415
Reply With Quote
  #13  
Old 09-23-2012, 08:36 PM
hutch246 hutch246 is offline
Freshman User
 
Join Date: Sep 2012
Posts: 40
hutch246 is starting off with a positive reputation.
Quote:
Originally Posted by 85lebaront2 View Post
One of the real problems with the 85-86 5.0L EFI is the entire EFI harness grounds at a two pin connector by the battery that is part on the original ground cable. It corrodes and you lose the ground. The wires in the harness are black with a light green stripe. I would find them where they plug in and put a ring terminal (solder it) on each and connect them directly to the battery negative terminal. This is from my 1986 EVTM. I chased a ground issue on one of these for a week before determining it was that plug, it is C101 on the diagram.
Do you mean a single pin connector? One pin in each end of wire? Actually mine is a spade or blade connector. Don't really see a need for connector. Simple splice would do.

More info on grounds. There is one at the rear of block near fuel rail connector, one going to a bolt on wiper motor, and a third that has a connector to a wire that goes into the wiring harness. This last one has a connector that isn't water proof and will likely corrode. Cleaned and reassembled with Di-electric grease.
Reply With Quote
  #14  
Old 09-23-2012, 09:26 PM
85lebaront2's Avatar
85lebaront2 85lebaront2 is offline
Old School Hot Rodder
 
Join Date: Feb 2006
Location: Exmore, VA
Posts: 5,080
85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.85lebaront2 has a great reputation on FTE.
william.a.vose
It is two wires with a rectangular plug/socket near the battery negative terminal. A splice will do nicely, just be sure it won't corrode from the battery fumes. The ground for the EEC was what you had asked about, that was the one I addressed. The grounds on these are pretty bad, the entire front harness other than the EEC grounds inside the cab on the firewall, The engine to body ground wire is the one to the wiper motor stud. I no longer have the 86 EVTM, I gave it to Archion.
__________________
Bill Vose (Old School Hot Rodder)
1986 F350 crew cab DRW 460ci EEC-V MAF/SEFI, E4OD, PMGR starter, 160 amp 3G alternator, 12X3 1/2 rear brakes, Traction lock 3.55
1995 Lincoln Continental (project car), 1994 Taurus LX (daily driver)
http://www.oldschoolhotrodder.com
"growing old is inevitable, growing up is optional"
Reply With Quote
  #15  
Old 09-23-2012, 09:32 PM
Gary Lewis's Avatar
Gary Lewis Gary Lewis is online now
FTE Chapter Leader
 
Join Date: Jul 2010
Location: Northeast, OK
Posts: 18,543
Gary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud ofGary Lewis has much to be proud of
Sunday afternoon/evenings are frequently used for maintenance on servers. I agree with Chris - try again tomorrow.
__________________
Rusty: '81 F150 Ranger XLT 4x4 w/a 351M, RV cam, Performer carb & intake, C6, & 3.50's
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads, Weiand intake, Street Demon 750/ZF5/3.50 gears w/Kevlar clutches
Worst fear: I die and my wife sells my trucks for what I've told her I have in them.
Reply With Quote
Old 09-23-2012, 09:32 PM
 
 
 
Reply

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
1991 Explorer 5spd Jerking Intermittently Alacarteauto Explorer, Sport Trac, Mountaineer & Aviator 7 12-09-2013 04:39 PM
Need horn wiring diagram 96 f150 88gtblack 1987 - 1996 F150 & Larger F-Series Trucks 1 11-15-2013 10:08 AM
Code 41 with/feedback carb blue84f250 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 11 05-19-2013 11:23 PM
alternator problem or ground problem jaydgraff 1961 - 1966 F-100 & Larger F-Series Trucks 4 04-26-2013 12:57 PM
1995 7.5l fuelly,help !!! nb-guy Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) 1 04-21-2013 09:53 PM



All times are GMT -5. The time now is 01:58 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - 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