Last post on Mar 26, 2010 at 11:35 PM
You are in the Ford Taurus/Mercury Sable
What is this discussion about?
Ford Taurus, Mercury Sable, Exhaust, Sedan
#16 of 20 1997 Ford Taurus
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 20 O2 sensor location late model Sable/Taurus
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.
#18 of 20 Re: 88 Taurus - trouble codes cannot be read - [leerob44]
Mar 23, 2010 (7:20 pm)
Did you ever figure out what was wrong? I am having similar problem with 97 Mercury Sable. My mechanic is baffled as well.
#19 of 20 Re: failed emission test [tthompson005]
Mar 26, 2010 (11:13 pm)
did you ever find out for sure what was wrong and why it was giving you that message? I am having a similar problem with a 97 Mercury Sable. Car runs fine, but cannot get it to pass the NYS Inspection.
#20 of 20 Re: 1997 Ford Taurus [shamrock26]
Mar 26, 2010 (11:35 pm)
Shamrock, did you ever find out what was causing it? I am having a similar problem - will not pass inspection - says sensors not ready. CEL is not on though.