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You are watching: Ford ranger o2 sensor bank 2 sensor 1

General technological & Electrical basic technical and electrical discussion for the Ford Ranger the does not fit in any kind of other sub-forum.
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Hi there, I"m gaining pretty devastating gas mileage and also am going come try changing out my o2 sensors, yet i need to understand how many are there, and where are they located? I"ve been seeing answers of varying from 1-3. It"s a 2001 XLT 3.0LThanks because that the help!
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Depends if that flex fuel or no I have actually 4 on my 03 flex fuel and i think the continuous has 3 it needs to at least have actually two you must be able 2 see them all from the bottom look ideal after the manifolds then before and also after the cats.


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On a "V6" engine there must be 1 O2 sensor on each exhaust manifold.Bank 1 sensor 1Bank 2 sensor 1Then on OBD II vehicles(after 1995) there will be 1 O2 sensor ~ the catalytic converter(sometimes 2), this sensor is mostly for surveillance if the cat converter is functioning well enough, i.e. Cleaning up the exhaust, these frequently last the life the the car since they acquire "cleaner" exhaust.Bank 1 sensor 2The bank 1 sensor 1 and Bank 2 sensor 1 O2"s are supplied to fine song lean/rich condition.Then the average between these 2 sensors is compared to financial institution 1 sensor 2 to see if cat converter is working to lower emissions, therefore the ago O2 sensor has some impact on lean/rich yet not much.O2 sensors room rated because that 80,000 miles however often occupational fine lot longer.Burning oil or long term "running rich" will shorten one O2 sensors life.Since there space two O2 sensors security lean/rich, if one was bring about a false lean, so computer was to run one bank richer you would probably acquire a CEL(check engine light).You can use a live OBD II scanner to monitor the sensors.The MAF sensor is what tells the computer the volume and temperature that the in coming air, this set the pistol lean/rich, so would effect MPG an ext than O2s.MAF sensors are basic to clean, yet use MAF sensor cleaner not carb cleaner.EGR system issues can effect MPG together well, however you would certainly usually obtain a CEL if that"s the case.The returnless fuel system you have actually runs at 65psi the pressure, so even a tiny leak will cause a change in MPG.You deserve to rent fuel push testers the hook as much as the fuel rail.Start engine make sure push is approx. 65psi, climate shut engine off and also watch the pressure, that shouldn"t stability drop, it should hold.At the finish of the fuel rail is a push damper with a vacuum heat attached, engine off, remove that vacuum line and also smell it because that gas smell, if you odor gas then change damper.Cold weather means denser air, which method more fuel is required to acquire correct fuel/air mix, so reduced MPG in winter is not abnormal yet it is not a large change.Also in chillier climates gasoline often gets ethanol added to stop freezing, ethanol go not have the very same "energy" every gallon together gasoline, it has less, therefore MPG will certainly go down, yet again not much.But incorporate these two things together and you may notice the difference.