Oxygen Sensor Replacement at your home or office.

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Oxygen Sensor Replacement Estimate for Pontiac Fiero

Pontiac Fiero Oxygen Sensor Replacement costs $101 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$96 to $114
Labor: $70 -$80
Parts: $26 -$34
Average Dealer price
$146 to 161
Average Shop price
$116 to 126
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1986 Pontiac FieroL4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$98.52Shop/Dealer Price$120.17 - $152.44
1987 Pontiac FieroL4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$97.99Shop/Dealer Price$119.58 - $151.51
1987 Pontiac FieroV6-2.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$97.99Shop/Dealer Price$119.53 - $151.43
1987 Pontiac FieroV6-2.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$129.34 - $167.13
1986 Pontiac FieroV6-2.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$98.52Shop/Dealer Price$120.18 - $152.46
1988 Pontiac FieroL4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$98.52Shop/Dealer Price$120.16 - $152.44
1986 Pontiac FieroV6-2.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$106.66Shop/Dealer Price$130.44 - $168.89
1987 Pontiac FieroL4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$129.36 - $167.16
Show example Pontiac Fiero Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service & Cost

What is the Oxygen Sensor all about?

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.

Oxygen Sensor-MATROX-1

Keep in mind:

  • Many oxygen sensors are damaged by leaking oil or coolant. If that is the case, the cause of that leak needs to be identified and repaired, or else the replacement oxygen sensor will be damaged as well.
  • New vehicles require specific oxygen sensors, and not the universal sensors that were common prior to 1996.

How it's done:

  • Scan the computer in the car for codes.
  • Inspect for vacuum leaks and holes in the exhaust system.
  • Remove and replace the oxygen sensor if it is bad.
  • Check electrical connections.
  • Check for proper operation of oxygen sensors.
  • Clear diagnostic codes.
  • Test drive car.

Our recommendation:

Keep up with the tune-ups. If check engine light is on, don't drive the car too long without getting it inspected. If check engine light is flashing, pull over and get the car towed to avoid costly repairs. Ask the mechanic to inspect the vacuum hoses and leaks in the exhaust system. If the vacuum hose or exhaust system is leaking, it will display an oxygen sensor fault code. Replacing an oxygen sensor may not fix the problem.

What common symptoms indicate you may need to replace the Oxygen Sensor?

  • Check Engine light is on.
  • Car is getting poor gas mileage.
  • Emission test fails.

How important is this service?

Your vehicle has multiple oxygen sensors, and they all help the car run optimally. The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter. The oxygen sensors then relay this information to your vehicle’s electronic control unit, so that it can adjust as necessary. Because cars depend on an ideal fuel-to-air ratio to function optimally, the oxygen sensors are leaned on for engine performance. When your oxygen sensors fail your car will run less smoothly, get worse mileage, and have worse emissions.

Fast and easy Oxygen Sensor Replacement service at your home or office.

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Meet some of our expert Pontiac mechanics

Real customer reviews from Pontiac owners like you.

283 reviews
Patrick
27 years of experience
Patrick did a great job he is a very well qualified mechanic. And he is most pleasant to work with very courteous and helpful. We had one oxygen sensor that the GM company sent us that was the wrong plug and part. Patrick noticed it right way and I had to reschedule him to come back when I receive the replacement. WILLIAM L CRAYTON William L Crayton
1998 PONTIAC FIREBIRD - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM, REAR/LOWER/DOWNSTREAM)
Want Patrick's expert advice? Ask your question now. Its free!
256 reviews
Jay
32 years of experience
Quick, friendly, and thorough!
2006 PONTIAC G6 - OIL PRESSURE SENSOR REPLACEMENT
Want Jay's expert advice? Ask your question now. Its free!
184 reviews
Tom
37 years of experience
Tom arrived on time. He is friendly, honest and did an excellent job fixing my car.
2006 PONTIAC TORRENT - OIL FILTER HOUSING GASKET REPLACEMENT
Want Tom's expert advice? Ask your question now. Its free!
87 reviews
Manuel
27 years of experience
Manuel is one of the few people I have met that is not only prompt, courteous and trustworthy but he has an immense depth of knowledge in what he is doing when it come to all aspects of a vehicle. I would highly recommend Manuel to any one looking for a top notch ASE certified mechanic. God Bless you Manuel.
1985 PONTIAC FIERO - WHEEL BEARINGS REPLACEMENT (DRIVER SIDE REAR, PASSENGER SIDE REAR)
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Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1986 Pontiac FieroL4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$98.52Shop/Dealer Price$120.17 - $152.44
1987 Pontiac FieroL4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$97.99Shop/Dealer Price$119.58 - $151.51
1987 Pontiac FieroV6-2.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$97.99Shop/Dealer Price$119.53 - $151.43
1987 Pontiac FieroV6-2.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$129.34 - $167.13
1986 Pontiac FieroV6-2.8LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$98.52Shop/Dealer Price$120.18 - $152.46
1988 Pontiac FieroL4-2.5LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$98.52Shop/Dealer Price$120.16 - $152.44
1986 Pontiac FieroV6-2.8LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$106.66Shop/Dealer Price$130.44 - $168.89
1987 Pontiac FieroL4-2.5LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$129.36 - $167.16
Show example Pontiac Fiero Oxygen Sensor Replacement prices

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