Oxygen sensor?
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Fleet Mechanic
Joined: Feb 2003
Posts: 1,314
Likes: 35
Oxygen sensor?
This is on 89 F250.
where is it located?
I hear that it needs to be changed every 80,000 miles, as it gets 'lazy' and your mpg worsens. Although I haven't really experienced that. It is F250HD, with 7.5cid/4.10 rear, which is not designed for mileage to say the least. I get 7-8 in the city and up to 11 on the highway if I keep it under 3,000.
Any O2 sensor stories?
where is it located?
I hear that it needs to be changed every 80,000 miles, as it gets 'lazy' and your mpg worsens. Although I haven't really experienced that. It is F250HD, with 7.5cid/4.10 rear, which is not designed for mileage to say the least. I get 7-8 in the city and up to 11 on the highway if I keep it under 3,000.
Any O2 sensor stories?
Moderator
Joined: Dec 2001
Posts: 22,436
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From: Louisville,Ky.
Yess, on the passenger side. There is usually a short piece of pipe between where the 2 pipes go into the cat. converter. It is kind of "H" shaped.
It will be in the pipe connected in between the two pipes. A 7/8" wrench will usually take it out.
Jimmy
It will be in the pipe connected in between the two pipes. A 7/8" wrench will usually take it out.
Jimmy
Posting Guru
Joined: Jul 2003
Posts: 1,280
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From: alaska
its been my experience that when the cat goes bad , its a good idea to replace the o2 also. i have never heard of a set milage for them, the slow reaction is usually caused by a cat that is starting o plug.there are other reasons of course , you can slso test th with a50.00 tester from a parts store, good luck,bob
