1999 F250LD 5.4L Auto 4X4; No start, low voltage at Inertia switch - Ford Truck Enthusiasts Forums



1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage

1999 F250LD 5.4L Auto 4X4; No start, low voltage at Inertia switch

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-13-2013, 06:59 PM
labadida1 labadida1 is offline
New User
Thread Starter
 
Join Date: Jul 2013
Posts: 2
labadida1 is starting off with a positive reputation.
1999 F250LD 5.4L Auto 4X4; No start, low voltage at Inertia switch

Hello All, I am new to the forum, I live in Morrow, Ohio. I bought this truck and have been working on this problem for two full days. It has been sitting for over a year and was told it needed spark plugs and a battery. I replaced both items and it turned over, would start with starting fluid but only briefly. I disconnected the fuel line on the tank side of the filter and had my son turn the key on several times, no fuel. I reconnected the line and tested voltage at the tank (Pink and blue (+) and black (-). No voltage. I went to the fuse box under the hood and have good 15A fuse with 12.5V there with the key on. The relay also makes 3 audible clicks when I turn the key on. I tested the inertia switch green/yellow wire; 6.8V grounded to the truck or to the small brown wire. I looked at the condition of the green/yellow wire up and into the harness and it did not appear damaged. Any advice on where this green/yellow wire travels to? I had read that it goes to the fuse box inside but did not see a listing for this in the manual. Any advice on this would be appreciated! Thank You.
Noel
1999 F250LD 4X4
142k
Reply With Quote
  #2  
Old 07-13-2013, 11:22 PM
Bluegrass 7 Bluegrass 7 is offline
Post Fiend
 
Join Date: Sep 2006
Posts: 6,001
Bluegrass 7 has a good reputation on FTE.Bluegrass 7 has a good reputation on FTE.Bluegrass 7 has a good reputation on FTE.
In a user manual page 151 look at fuses 19 and 32 in the engine bay fuse box.
Good luck.
Reply With Quote
  #3  
Old 07-14-2013, 09:17 AM
labadida1 labadida1 is offline
New User
Thread Starter
 
Join Date: Jul 2013
Posts: 2
labadida1 is starting off with a positive reputation.
Good morning thanks for the information I checked the voltage on 19 with the key on and didn't get voltage, it's listed as the trailer Stop and right turn lamp. I did not see a listing for a fuse number 32.though. Do you know where the green/ yellow wire initiates does it come directly from the fuse box to the initertia switch? Thanks
Reply With Quote
  #4  
Old 07-14-2013, 10:50 AM
vaper vaper is offline
Elder User
 
Join Date: Aug 2011
Posts: 543
vaper is starting off with a positive reputation.
You need to look at the logic of the system
The inertia switch shuts off power to the fuel pump in case of an accident.

You have a voltage drop at the switch so it must be from the power source
(provided you had a good ground on the tester)
That is (fuse 19 in my f150),the fuel pump relay, or the circuit (wire)itself
I suspect the relay or corrosion at the fuse
good luck keep us posted
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2004 Expedition Cranks over but won't start nyjetfan Expedition & Navigator 12 09-30-2016 11:10 PM
2002 Fuel Pump Troubleshooting (intermittantly dies) cokeman Modular V10 (6.8l) 17 04-29-2016 10:38 PM
Low power to fuel pumps Bagpiper22 1987 - 1996 F150 & Larger F-Series Trucks 6 10-30-2015 12:57 PM
low voltage at inertia switch- f250 V10 no start mcmahon_66 1999 to 2016 Super Duty 7 12-25-2014 10:55 AM
no power on control side of fuel pump relay dakota1820 Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) 2 03-06-2014 08:50 PM


Go Back   Ford Truck Enthusiasts Forums >

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 09:24 AM.


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.