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Taurus Emissions Code

17 messages,  Last post on Aug 23, 2009 at 10:57 AM

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#14 of 17 Problem solved... by atucker3 Jun 30, 2008 (7:32 am)
Thanks for the reply. This weekend, I cleaned the throttle body, and of course that didn't help. I checked the small, "hard" vacuum lines that go to the EGR and into the upper mainfold. They were good.I could still hear it "sucking air" from somewhere. I started running my hand under the manifold along the other lines (with the engine running), and I stuck my finger by one of the lines, the idle came up to normal. I could feel the vacuum really strong. It was a rip in a soft rubber elbow that is hooked into the bottom of the manifold, just behind the throttle body. The elbow is rubber, with a hard plastic pipe on the other end. The vacuum was so strong that it was collapsing the elbow, pinching it off. The hard plastic pipe runs to another rubber hose below the fuel injectors. There are no clamps on the hard plastic pipe. There is a heavy steel "pinch" type clamp holding the rubber elbow to the manifold. It was Saturday, and no dealers were open that late. I patched the rip with some weatherstrip glue and (gulp!) duct tape. I disconnected the battery for a few minutes, and put everything back together. The light hasn't come back on, and the car runs fine. I will go to the dealer and get the part, today. I had read somewhere that lean conditions are almost always vacuum related. Thanks again for the reply! atucker3
#15 of 17 02 sensor for 96 ford taurus 3.0 v6 by mickeyb3 Jun 27, 2009 (10:50 am)
i need to know how to replace my 02 sensor an about were they are
#16 of 17 1997 Ford Taurus by shamrock26 Aug 05, 2009 (7:14 am)
97 Ford Taurus 106 k It has service engine soon light on,I went for state inspection and it failed emissions they told me it couldnt get a reading has anyone else had this problem or can anyone help me with this problem is and how can i fix it i'd appreciate someones opinion or input....Thanks
#17 of 17 O2 sensor location late model Sable/Taurus by rogerb34 Aug 23, 2009 (10:57 am)
Upstream sensors are critical as they are primary in fuel injection timing. Downstream sensors verify that emissions are within tolerance. Upstream sensors are located on the front and rear exhaust manifolds where the cylinders converge. Looks like a large spark plug but is aluminum with 4 wires and a connector. The rear bank same but not easy to see. Disconnect the front bank sensor first. Squeeze to release catch. Do it with left hand. Takes some tries to unplug. Reason left hand is the rear bank connector is accessible left hand unless removal of the upper air intake manifold. I've done it on a 05 Duratec without removal. Use a 1/2 inch O2 sensor socket and rachet. Inexpensive deep socket with wire slot at auto store. Try cold w/o using max force. If it doesn't break, warm engine for 30 sec and apply a penetrant. Rear use a penetrant soaked sponge. High mileage engines can pose a removal problem. I've replaced several without a problem but. Add a little anti sieze to the new sensor threads. Make sure not on the tip. Snug tight like a spark plug and connect the plug. Bosch is my preference and OEM electrical connection. O2 sensor is primary for proper fuel and MPG. Those cars with Upstream sensors have a cat built into the exhaust pipe just below the sensor. Drive with a check engine warning light on due to fuel mixture beyond specs will burn out the cat. Extremely expensive to replace the upstream cat as it is cast into the exhaust pipe. In comparison, the upstream sensors are $50 - $80 each depending on the car.

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