Won't start - Check and clean those chassis grounds! - Ranger-Forums - The Ultimate Ford Ranger Resource

General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

LinkBack Thread Tools Search this Thread
Old 06-30-2016
Thread Starter
Join Date: Jun 2016
Location: Escondido, CA
Posts: 1
Won't start - Check and clean those chassis grounds!

A year ago my 94 4.0 was having intermittent start problems, under varying conditions. No codes were logging. After replacing the fuel pump with no fix, and trying all the usual troubleshooting of relays, connections, etc. I went back to basics and checked the three electrical grounds I found under the hood. They were all degraded by dirt, old paint, and corrosion. After cleaning them up and applying a dielectric grease for protection, I have not had anymore problems for 12+ months. So when troubleshooting be sure to not overlook the basics, i.e. does it have power AND a ground?

See G101 and G103 for example on the attached wiring diagram.

Won't start - Check and clean those chassis grounds!-2011-12-04_051342_94_ranger_wiring_diagram_mass_air.gif

Reply With Quote
Old 07-01-2016
RF Veteran
iTrader: (1)
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,615
Good post and good info, thanks

12 volts is not 12 volts unless there is a 0 volts(ground) so electricity can flow, that's why a 12 volt light bulb has 2 connections, hooking it up to 12 volts doesn't make it light up, have to hook it up to 0 volts as well, flow of electricity thru the filament heats it up and you get light
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
October 9-11 ROC Fest 2015 at the Proving Grounds m3dragon Meets, Greets, & Events 3 11-09-2015 09:11 AM
fuse box grounds??? dsalgam General Technical & Electrical 2 06-07-2013 12:50 PM
Very weird! Won't start, won't shut off, flashing exterior lights fletcher969 2.9L & 3.0L V6 Tech 4 01-14-2013 06:26 PM
We all need to make a list of grounds on rangers rangerrunner11 General Ford Ranger Discussion 5 06-17-2012 02:33 PM
Bad Grounds l2en Audio & Video Tech 17 03-29-2006 09:22 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 11:31 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.