Question about 1999 Ford Explorer

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Were is bank 2 sensor 1 located 1999 ford exploer

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2 Answers

Drivers Side of engine
The first sensor,one closest to the engine

Should be in converter if a V8
or in pipe before converter in a V6

If you have a V8 do both sides

A Sensor code doesn't tell you to
replace anything. Only that the sensor
went out of range
You have to find out why

Posted on Mar 14, 2011

  • Anonymous Mar 14, 2011

    Bank 1 Pass Side
    Bank 2 Drivers Side

    1,2,3,
    4,5,6,

    1,2,3,4,
    5,6,7,8

  • Anonymous Mar 14, 2011

    That didn't come out as I typed it

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Passenger side exhaust before the catalytic converter.

Posted on Mar 14, 2011

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1 Answer

Where is the oxygen sensor location on a 1999 ford explorer bank 2 sensor 1?


bank 2 is the drivers side of the motor and sensor 1 is the first sensor in the exhaust system from the manifold back to the catalytic convertor.

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Fig. Oxygen sensor location-Forester 1998-2002 2.5L SOHC engine (click over image for zoom).

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Where is bank 2 o2sensor located at on a 99 explorer


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Diagram: Ford Explorer and V8 O2 (Oxygen) Sensor Locations

Ford Explorer and V8 O2 Sensor Locations diagram. This shows the location of Ford oxygen sensors on Bank 1 and Bank 2. If you want to know where your O2 sensors are, this diagram is your guide.

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I need to know which is the bank 1 02 sensor


Oxygen sensors are always numbered like this:
Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2

Some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2

Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.

Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Hope helps (remember to rate this).

Oct 20, 2010 | Ford Explorer Cars & Trucks

1 Answer

Where is the upstream oxygen sensor located


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O2 sensors on 1998 ford windstar


1998 Ford Truck Windstar 3.8L SFI 6cyl, there are 4 oxygen sensors on the Windstars They are divided into 2 banks of 2. Bank 1 is the for the rear 3 cylinders of the engine - Bank 2 is for the front 3 cylinders. Bank 1 / Sensor 1 (upstream) is located just below, in the pipe, the exhaust manifold on the back of the engine.

REMOVE TIP: you may have to bend part of the transmission heat shield out of the way - be sure to put it back when done.
Bank 1 Sensor 2 (downstream) is located just past the drivers side catalytic converter.
Bank 2 Sensor 1 (upstream) is located just below the exhaust manifold, in the pipe, at the front of the van - access is from the top.
Bank 2 Sensor 2 (downstream) sensor is located just past the passenger side catalytic converter.

NOTES: * Use lots of penetrating oil - allow to soak - to make removal easier and avoid damaging the exhaust pipe

Hope this help; TY for using Fixya (remember rated and comment this).

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1 Answer

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S1 means the sensor is located BEFORE the catalytic converter
S2 means the sensor is located AFTER the catalytic converter

You didn't say which engine you have, so I've included the diagrams of both 4 cyl and 6 cyl so you can see the banks

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