air/fuel ratio gage - 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.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 10-21-2008
fabioonachopper's Avatar
Member
Thread Starter
 
Join Date: Feb 2008
Location: Ware,Ma
Posts: 96
air/fuel ratio gage

hey guys, i hope this is in the right topic but anyways i have a 02 4.0 and i'm looking to hook up a air/fuel gage to maybe save me .10 at the pumps when i fill up. ha. but i'm not sure what wire i'm supposed to hook it up to on my computer.. i dunno if anyone has gone through this before could maybe enlighten me on this situation. any info is appreciated. thanks -Dan
Reply With Quote
  #2  
Old 10-21-2008
whippersnapper02's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Sep 2006
Location: Earth, Milky Way Galaxy
Posts: 7,415
A a/f gauge won't help you save gas. All it does is tell you if the engine is running rich or lean. If you want something to save you gas get a Scangauge.

http://www.stuffforyourranger.com/st...roducts_id=212
Reply With Quote
  #3  
Old 10-21-2008
fabioonachopper's Avatar
Member
Thread Starter
 
Join Date: Feb 2008
Location: Ware,Ma
Posts: 96
well i'm pretty much talking about when i'm towing becuase i race quads/sleds year round so if i'm going up a hill i'd like to know if i'm just wasting gas going up the hill and with little gain you know? plus i have had it laying around since my last ranger so i'd still like to hook it up
Reply With Quote
  #4  
Old 10-21-2008
My91Ranger's Avatar
Member
iTrader: (1)
 
Join Date: Apr 2007
Location: Roseville, Michigan
Posts: 2,252
Like said before that A/F gauge won't help with that, it mearly shows how the engine is running. If you want to see how much load is on the engine for towing you could use a vacuum gauge, I have one on my truck and it helps show me how much i'm into the throttle and how hard the motor is working.
Reply With Quote
  #5  
Old 10-21-2008
whippersnapper02's Avatar
RF Veteran
iTrader: (1)
 
Join Date: Sep 2006
Location: Earth, Milky Way Galaxy
Posts: 7,415
An a/f gauge still won't help you have gas. It tell you if the engine if running lean or rich which helps you if you are tuning the engine so you can add or take away fuel. The air/fuel ratio doesn't really change when you use more or less throttle.

Go for the scangauge. You could also use an economy gauge(vacuum gauge in disguise).
Reply With Quote
  #6  
Old 10-21-2008
Jmhm17's Avatar
Member
 
Join Date: Oct 2007
Location: Worcester, MA
Posts: 534
yeah the a/f guage is not going to tell you if your running rich or lean at half throttle the numbers will be so fast and inconsistant it would be pointless. like stated its mainly used for tunning at wide open throttle. you should be looking at somthing that messures load or injector duty cycle, thats mainly what fule econamy guages monitor in luxury cars.. get a scan guage i think it will tell you everything you need to know.

plus with the a/f guage your talking about (autometer a/f guage for ex..) its not going to tell you anything if your reading it off of a narrow band o2 sensor, we like to call these "light show guages". if you want a real a/f gauge (wideband) your gona have to get somthing like am AEM uego or an NGK afx wich requeires you to use a standalone o2 sensor, and they arent cheap..
Reply With Quote
  #7  
Old 10-22-2008
fabioonachopper's Avatar
Member
Thread Starter
 
Join Date: Feb 2008
Location: Ware,Ma
Posts: 96
than i guess i'm mistaken terribly but when i tow with my fathers 454 ( packed full 4 place snowmobile trailor and 1 sled in the bed ) and i'm going up a hill the a/f gage shows me if i'm going into the throttle to much and with little benefit so i'm not just putting gas into the engine thats just making it run rich...
Reply With Quote
  #8  
Old 10-22-2008
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,831
An inexpensive "rich/lean" narrowband A/F meter would be perfectly adequate for finding the transition threshold from closed loop to open loop fueling. It is also easy to install.

You can use the signal wire from either of the two front sensors. Tapping in right at the PCM (passenger side firewall) offers a much cleaner, drier environment than down by the sensors. Regardless of which location you choose, these are the harness color codes:

DS: red/black
PCM pin 87

PS: gray/light blue
PCM pin 60


Autometer instructions:

http://egauges.com/pdf/AutoMeter/837j.pdf
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Fuel gage warning light stuck on. Sammyj General Technical & Electrical 1 12-02-2014 05:08 AM
Air to Fuel Ratio? Kris03 2.9L & 3.0L V6 Tech 4 07-15-2011 08:40 PM
Gauges A/F ratio, Boost, and Fuel pressure zabeard General Technical & Electrical 9 10-16-2008 01:37 PM
air/fuel ratio hook up fabioonachopper DOHC - 2.3L Duratec / Mazda L Engines 5 02-03-2008 09:03 PM
Moving gas gage? rangererv General Technical & Electrical 7 04-01-2005 10:54 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 12:16 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.