Question about Ford Cars & Trucks
The oxygen sensors are always in the exhaust stream somewhere. Some have 2, some 3, and some have 4 O2 sensors. The HO2 sensor means it is a heated oxygen sensor, there is a small separate heating element in the sensor for faster response times, like when engine is cold.
Depending on the manufacturer and the specific vehicle, you will have 1 or 2 sensors near the engine in the exhaust, but before the catalytic converter. These sensors are used to keep track of the air/fuel mixture that is burned in the engine, it is feedback for the computer to either add or subtract the amount of fuel through the injectors. The idea is to keep the mixture at the optimum for efficient burning.
Now after the catalytic converter you will also have another oxygen sensor, but this one serves a different purpose-it is only there to monitor the efficiency of the cat in terms of it converting unburnt hydrocarbons into carbon dioxide.
Posted on May 14, 2017
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 30, 2016 | 2005 Ford Freestyle
Aug 30, 2016 | 2005 Ford Freestyle
Jul 07, 2016 | 2005 Ford Freestyle
Feb 06, 2015 | 2005 Ford Freestyle SEL
Aug 24, 2013 | 2005 Ford Freestyle
Feb 03, 2010 | 2005 Ford Freestyle
Dec 01, 2009 | 2005 Ford Freestyle
Aug 30, 2009 | 2005 Ford Freestyle
Aug 03, 2009 | 2005 Ford Freestyle
24 people viewed this question
Usually answered in minutes!