Oxygen Sensor Replacement Estimate for Mercury Mountaineer

Mercury Mountaineer Oxygen Sensor Replacement costs $129 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$126 to $160
Labor: $70 -$104
Parts: $56
Average Dealer price
$206 to 234
Average Shop price
$154 to 179
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CarServiceYourMechanic PriceShop/Dealer Price
1997 Mercury MountaineerV8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$151.97Shop/Dealer Price$186.09 - $245.97
2004 Mercury MountaineerV8-4.6LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$129.84Shop/Dealer Price$159.39 - $215.21
2010 Mercury MountaineerV6-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$129.84Shop/Dealer Price$159.34 - $215.13
1999 Mercury MountaineerV6-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$129.84Shop/Dealer Price$159.37 - $215.17
2001 Mercury MountaineerV6-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$130.97Shop/Dealer Price$160.74 - $217.37
2010 Mercury MountaineerV8-4.6LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$130.97Shop/Dealer Price$160.73 - $217.34
2006 Mercury MountaineerV6-4.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$131.25Shop/Dealer Price$161.17 - $218.06
2004 Mercury MountaineerV6-4.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$129.84Shop/Dealer Price$159.39 - $215.21
Show example Mercury Mountaineer Oxygen Sensor Replacement prices

Parts required for a Mercury Mountaineer Oxygen Sensor Replacement

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471 reviews
Peter
38 years of experience
Great service. Great price. Found the mechanic I have been looking for!!!
2004 MERCURY MOUNTAINEER - FAN CLUTCH REPLACEMENT
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274 reviews
Noe
31 years of experience
Noe was very prompt and arrived at the exact time the appointment was booked for. Even though it was dark and cold while he performed the work he was very conscientious and did not rush to complete the job. He seemed to really enjoy working on cars and was very knowledgeable .
2010 MERCURY MILAN - WATER PUMP REPLACEMENT
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268 reviews
Richard
16 years of experience
Professional, on time and efficient
2006 MERCURY MILAN - IDLER PULLEY REPLACEMENT
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105 reviews
Alfredo
16 years of experience
Great mechanic!! He gave my car a good inspection and found some additional things I should take care of before they cause bigger issues. Did my original service quickly and effectively (and might I add this guy is very prompt). Will definitely book with Alfredo again.
2006 MERCURY MOUNTAINEER - FUEL PRESSURE SENSOR REPLACEMENT
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All about Oxygen Sensor Replacement

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor. Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor. If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

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