Question about 1986 Ford Econoline

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I need to know how to find and replace the o2 sensor

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The 02 sensor is usually located just before your cat box or after it should be on your exhaust for sure. replacement usually easy disco the wires screw it out and screw in the new one and hook wires back up.

Posted on Feb 27, 2009

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Posted on Jan 02, 2017

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2003 chevy aveo #1 O2 sensor


#1 is the up-stream sensor (The O2 sensor located before the Catalytic Convertor). #2 is the down-stream O2 sensor. This sensor is located after the Catalytic Convertor. I hope this helps, let me know if you have other questions concerning this issue. Good luck.

Mar 18, 2014 | Cars & Trucks

1 Answer

What is making my o2 sensor fault out?


I would first want to know if the sensor is actually failing. A trouble code for a sensor is not a sign the sensor needs to be replaced, only that the data coming from the sensor is out of normal range.

Jun 26, 2013 | 1995 Toyota 4Runner

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Front o2 sensor is needing to be replaced


The front sensor should be in front of the catalytic converter.

Jul 06, 2012 | 2006 Ford Focus

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How do i know which o2 sensor needs to be replace?


how do you know you need one? u need a good scanner that shows live data.

May 27, 2010 | 1996 Ford Explorer

3 Answers

Code po430 not sure what maybe converter


One of three (3) possibitlies:
1. Catalytic Converter is malfunctioning.
2. O2 Sensor is malfunctioning. This will be the O2 Sensor located on the Catalytic Converter. However you should check and/or replace both sensors if needed.
3. You have an Exhaust Leak.
In Order of checking:
A. Check and Repair any Exhaust Leak.
B. Replace the O2 Sensor on the Catalytic Converter 1st. Also Known as the Downstream O2 Sensor or HO2 Sensor.
C. Replace the O2 on the Exhaust Manifold prior to the Catalytic Converter. Also Known as the Upstream O2 Sensor.
D. Replace the Catalytic Converter.
Let me know if this helped, or if you have any additional information, problems or questions. Feel free to contact me at FixYa.com!

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1 Answer

How do i know if i need to replace the oxygen sensor?


on your vehicle the obd1 computer is not as sensitive as obd2 .i have seen o2 sensor not working and no codes were set. so if the sensor looks rusty on the out side or you know that the sensor has not been changed in several years i would replace the o2 sensor.remove the battery ground cable for a couple of minutes to clear the learned values,replaced the o2 sensor then reconnect the ground cable start engine let idle for 2 minutes in park,then 1 min. in drive,then drive for approx.10 min. this will help the computer to relearn.hope this helped

Oct 30, 2009 | 1994 Chevrolet S-10

2 Answers

I need to know what the definition for fault code


The #2 O2 sensor on the cataylitic convertor,could be caused by a bad sensor or bad convertor.

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1 Answer

Replacing O2 Sensor What color are the original: Wires


black is usually power and if there is a blue its the feedback to the pcm

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