O2 sensors
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Junior Member
Joined: Jun 2003
Posts: 5
Likes: 0
From: Ohio
O2 sensors
Hello everyone, this is my first post here so I will try and make it good. Well I am a long time member of ford-trucks.com a site very similar to this, and I thought that I would try you guys out too.
Okay heres the problem, coming home from work I was driving normally at 55 and poof the CES light comes on, I get angry because I just got the truck for a graduation present. I went to Autozone and they put it on the scanner, and it said it was the bank 4 o2 sensor. So I got a price
$80 and went home in dispair. So I did what any old school Ford guy would do, I disconected the battery and stomped on the brake(resets faster sucks up all the juice) and went on and restarted the truck, light went off. Well I just got some gas (87) and the light came on, is it possible that the 87 gas could set the sensor off. If this is the case I have heard of a 02 simulator at summit which "helps" the computer out 
So any imput is good. Thanks.
Okay heres the problem, coming home from work I was driving normally at 55 and poof the CES light comes on, I get angry because I just got the truck for a graduation present. I went to Autozone and they put it on the scanner, and it said it was the bank 4 o2 sensor. So I got a price
$80 and went home in dispair. So I did what any old school Ford guy would do, I disconected the battery and stomped on the brake(resets faster sucks up all the juice) and went on and restarted the truck, light went off. Well I just got some gas (87) and the light came on, is it possible that the 87 gas could set the sensor off. If this is the case I have heard of a 02 simulator at summit which "helps" the computer out So any imput is good. Thanks.
Senior Member
Joined: May 2002
Posts: 194
Likes: 0
From: New Brunswick, Canada
Post the code you got from Autozone when they did the scan. Or search out the code. It has probably been discussed before. Try checking the O2 sensor in question for broken or shorted wires. Just a thought.
Senior Member
Joined: Feb 2002
Posts: 204
Likes: 0
From: MADISON, WI
Welcome,
You did not mention the mileage on the vehicle. In general for the "highest performance", the upstream O2 sensors should be replaced after 30,000+ miles. The Ford techs will tell you this, if you ask. Many, even most folks do not do this, but wait unil a CEL tells them to change said sensor. Basically you should treat the upstream sensors as a maintenance item for highest performance. Unfortunately, O2 sensors are not a dime a dozen. I paid about $70 a piece here at a local parts store.
In answer to your specific question I have not heard of quality fuel tripping a check engine code.
Botom line: if you want to play, be prepared to pay.
You did not mention the mileage on the vehicle. In general for the "highest performance", the upstream O2 sensors should be replaced after 30,000+ miles. The Ford techs will tell you this, if you ask. Many, even most folks do not do this, but wait unil a CEL tells them to change said sensor. Basically you should treat the upstream sensors as a maintenance item for highest performance. Unfortunately, O2 sensors are not a dime a dozen. I paid about $70 a piece here at a local parts store.
In answer to your specific question I have not heard of quality fuel tripping a check engine code.
Botom line: if you want to play, be prepared to pay.
O2 sensor
Technical Article Contributor
Joined: Dec 1997
Posts: 9,417
Likes: 11
From: Windsor,Ontario,Canada
98,
First there are 4 HeatedO2 sensors. Bank 1 is the passenger side and bank 2 is the driver side. There are 2 sensors per bank. The first sensor in bank 1 is #11 and it monitors the air fuel ratio for the cylinders on that side. The second sensor in bank 1 is #12 and it monitors the efficiency of the catilitic converter. Bank 2 works the same way having #21 and 22. If there is a failure of the sensor it will set a code. If the sensor sets a code indicating that the bank is lean or rich it is telling you that there is too little or too much fuel being added to the Air Fuel mix. There are also codes that can indicate that the sensor is malfunctionning but it can fail in different ways. It could be caused by an outright failure of the sensor or of the electrical circuits feeding the sensor. Diagnostics are done depending on what is wrong. That is why it is importand to know what the exact code is.
Regards
Jean Marc Chartier
First there are 4 HeatedO2 sensors. Bank 1 is the passenger side and bank 2 is the driver side. There are 2 sensors per bank. The first sensor in bank 1 is #11 and it monitors the air fuel ratio for the cylinders on that side. The second sensor in bank 1 is #12 and it monitors the efficiency of the catilitic converter. Bank 2 works the same way having #21 and 22. If there is a failure of the sensor it will set a code. If the sensor sets a code indicating that the bank is lean or rich it is telling you that there is too little or too much fuel being added to the Air Fuel mix. There are also codes that can indicate that the sensor is malfunctionning but it can fail in different ways. It could be caused by an outright failure of the sensor or of the electrical circuits feeding the sensor. Diagnostics are done depending on what is wrong. That is why it is importand to know what the exact code is.
Regards
Jean Marc Chartier