1998 Mercury Sable O2 sensor

1998 MERCURY SABLE
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DANGERFIELD78
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I have a '98 Mercury Sable with around 143K miles and I need to replace the O2 sensor. The problem I have is I don't have the time right now to go poking around under the car to find out where it is. The auto parts store has listings for one both before and after the catalytic converter. The prices are different for both and I need to know where it is located. Thanks.

Travis
Oct 10, 2006 at 6:03 PM
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MANDSSTAIRS
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one of your O2 Sensors is easily accessible just popping your hood, just look directly down your exhaust head pipe just below the exhaust manifold and you will see it, that is your forward upstream. Your rear upstream is a little harder to get at, you do need to get underneath the car for it, just behind your transaxle fluid pan you look up and you can see the O2 Sensor, a bugger to get at. And your 2 downstream are relatively easy to get at, they are just behind each catylitic converter, on top of your exhaust pipe. Hope this was of some assistance to you
Oct 25, 2006 at 2:04 PM