Help diagnosing fuel pump issue - Ranger-Forums - The Ultimate Ford Ranger Resource


SOHC - 2.3L & 2.5L Lima Engines Discussions and Topics specific to the Lima 4 cylinder engines

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-17-2010
Member
Thread Starter
 
Join Date: Dec 2010
Location: Edmonton, Alberta
Posts: 4
Help diagnosing fuel pump issue

Hi guys,

I driving a 1996 Ranger 2.3L 4cyl. I am new to the forum and need some expertise diagnosing why my truck suddenly died the other day while driving.

I don't hear the fuel pump now so I thought I would check for voltages with a meter

there are 3 wires going into the inertia switch and there is continuity between the 2 thicker wires. When key is in the on position, there is no voltage to either thick wire but there is 12v to the thinner wire;I am not sure what this wire is for (it does not exist in my haynes wiring diagram).

I would like to check the relay under hood next but I don't have a diagram and nothing is labelled.

Does anybody have a diagram for the relays and fuses under the hood?
Can somebody explain the 3 wires in the inertia switch?

Thanks!

Last edited by karmtec; 12-17-2010 at 12:24 PM.
Reply With Quote
  #2  
Old 12-17-2010
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,831
Quote:
Originally Posted by karmtec View Post
Can somebody explain the 3 wires in the inertia switch?
95~2000

The inertia switch normally has power in from the fuel pump relay on the Dark green/Yellow and power out to the pump on the Pink/Black. When the inertia switch is tripped, the power is disconnected from the pump and redirected through the Gray/Orange to a "Fuel Reset" indicator light in the instrument cluster.
Reply With Quote
  #3  
Old 12-18-2010
Member
 
Join Date: Aug 2010
Location: Vancouver, BC
Posts: 42
You can always bypass the inertia switch with a heavy gauge wire, even rebar wire, as it holds it shape. Take the harness off the switch and insert the wire. Be careful, as there is a lot of current through this switch, so the wire will get hot if it has current through it for any amount of time. After doing this, listen for the pump to prime when you turn on the key, and try turning the engine over.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Diagnosing Fuel Problem jdmillard General Technical & Electrical 5 12-18-2013 10:09 AM
my fuel pump wont turn on ive replaced the relay n the pump.. 00Red 2.9L & 3.0L V6 Tech 1 05-28-2013 10:00 PM
$125 Fuel Pump vs $300 Fuel Pump? Which to get? TheRealestWhiteBoy General Technical & Electrical 12 01-19-2013 08:05 PM
Want to Buy: Fuel line between fuel filter & fuel pump - TN iplayloudly Interior, Exterior, Electrical, & Misc. 7 05-02-2012 04:10 PM


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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 09:45 PM.


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.