02 Sensors
Senior User
Joined: Jan 2000
Posts: 190
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02 Sensors
On my F150 (90 351ci), I replaced the original oxygen sensor at about 130,000 mi, and noticed about a 1.5-2 mpg improvement. Haven't noticed much of a performance change, though. The parts shop my brother used to work at recommended changing the oxygen sensor every 60,000 miles, as part of a thorough (sp?) tune-up, but, of course, they were trying to make the sale. 
chuck
chuck
Postmaster
Joined: Jul 1999
Posts: 3,172
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02 Sensors
The effectiveness of O2 Sensors deteriorates over time ... Its best to verify they are the casue of the problems you are having before you replace them . Check for any codes stored in the EEC and that the O2 Sensor (s) go to the closed loop configuration . Most Ford O2 Sensors are heated which means they are more effective than by heating of the exhaust gases alone . Computer sensors are usually very durable and last a long time . The same things that caused engines to loose performance 20 yrs ago still applies today ...always start with the basics before you condem computer related components . Im not saying the O2 Sensor isnt performing as it should , its always cheaper to start with the usual things that do wear out with more frequency like spark plugs . Im sure none us has cash money to burn on parts if they arent needed .
Paul
Paul
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Joined: May 2000
Posts: 4
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02 Sensors
I have a 93 f-150. The check engine light would come on once in a while. Also my gas mileage decreased. I took it to the dealer and even the computer could not come up with why it was doing this. Even though they are suppose to give codes, they don't always come up with exactly what the problem is.
I replaced the O2 sensor and the light never came on again and my gas mileage greatly improved.
I have even read where the sensor should be replaced after so many miles.
I woule replace the sensor. It is easy, and the benifits outway the cost. They don't cost that much.
I replaced the O2 sensor and the light never came on again and my gas mileage greatly improved.
I have even read where the sensor should be replaced after so many miles.
I woule replace the sensor. It is easy, and the benifits outway the cost. They don't cost that much.
