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Gegeco.2003 Ford Windstar Exhaust Sensor location

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The Windstar has four sensors in the exhaust system. Each side (bank) has two sensors. The first sensor after the exhaust manifold is the oxygen sensor and monitors how that bank is running, sending information to the computer. The second sensor is a catalytic converter monitor sensor. It monitors the job the cat is doing, sending info to the processor as well. The connectors are blue or gray (factory) and are located on the engine side of the exhaust. The front sensors are a little more difficult to get to then the rears.

There is also a sensor called a DPFE that measures back pressure from the exhaust and is used to properly operate the EGR system. It is located on the left side of the engine torward the rear of engine (front of car). Good luck.

Posted on Apr 09, 2011

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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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An Engine Light came on the dashboard of my 2003 Ford Windstar.The code came up saying p0171 (Fuel System too lean.(Cylinder bank 1) What does this mean?

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