Oxygen sensor location
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Oxygen sensor location
Where are the Oxygen Sensors located on a 2001 Sport Trac? I now have 81,000 and i pulled codes on it and it said i need to change the sensor in bank 1. However, if someone could tell me where they all are, this sounds like a good project for this saturday.
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Bank 1 is always the side with the number 1 cylinder, which is the passenger side on the Ford V6 and V8. If the code shows sensor 1, then it's the one nearest the exhaust manifold (upstream), if number 2, then it's the downstream sensor.
The same applies to bank 2, drivers side.
The same applies to bank 2, drivers side.
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From: SoCal
Upstream is on the engine side of the cat, downstream is on the other side of the cat.
Which code did you pull?? If it's a lean code thats caused by a vacuum leak or an O-2 circuit open code, changing the O-2 wont help.
Which code did you pull?? If it's a lean code thats caused by a vacuum leak or an O-2 circuit open code, changing the O-2 wont help.
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Not sure what the code was, i took it to advance auto parts, and they printed out a thing saying engine running lean on bank 1. Because of the vehicle having 81,000 miles i figured thats what it would be. How do i check for a vacuum leak?
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From: SoCal
If you are real lucky a bottle of injector cleaner in the gas will clear this up. A clogged injector can cause a lean code on one bank only.
Another thing you can try is to use a piece of garden hose like a stethoscope. Just poke around with it and see if you can hear a vacuum leak around the intake manifold.
P0171 is the code for lean bank one. Try doing a forum search on the code & see what you come up with.
Odds are the O-2 sensor is NOT the problem.
Good luck with it.
Another thing you can try is to use a piece of garden hose like a stethoscope. Just poke around with it and see if you can hear a vacuum leak around the intake manifold.
P0171 is the code for lean bank one. Try doing a forum search on the code & see what you come up with.
Odds are the O-2 sensor is NOT the problem.
Good luck with it.
Last edited by 87 XLT; Jun 5, 2005 at 02:20 AM.
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Looked at the vacuum hoses, and they looked fine. So i decided to put a new o2 sensor in it. It was the o2 sensor. Now the sport trac is happy, and so am i now that the mileage will increase.
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