Oxygen Sensor Replacement at your home or office.

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Oxygen Sensor Replacement Estimate for Cadillac Fleetwood

Cadillac Fleetwood Oxygen Sensor Replacement costs $109 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$95 to $174
Labor: $70 -$80
Parts: $25 -$94
Average Dealer price
$143 to 281
Average Shop price
$115 to 201
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Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
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CarServiceYourMechanic PriceShop/Dealer Price
1983 Cadillac FleetwoodV8-6.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.94Shop/Dealer Price$142.84 - $190.35
1994 Cadillac FleetwoodV8-5.7LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$133.72Shop/Dealer Price$175.18 - $242.13
1982 Cadillac FleetwoodV8-6.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$140.23 - $186.18
1985 Cadillac FleetwoodV6-4.3L DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$140.26 - $186.24
1981 Cadillac FleetwoodV8-5.7L DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.94Shop/Dealer Price$142.86 - $190.39
1984 Cadillac FleetwoodV8-6.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.94Shop/Dealer Price$142.83 - $190.34
1982 Cadillac FleetwoodV8-5.7L DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$106.66Shop/Dealer Price$141.39 - $188.06
1980 Cadillac FleetwoodV6-4.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.24Shop/Dealer Price$142.08 - $189.15
Show example Cadillac Fleetwood 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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586 reviews
Joshua
22 years of experience
Joshua was a great representative of yourmechanic.com. He was personable and got the job done. He was dedicated to providing excellent customer service. I would recommend your company to all of my friends without reservation. Dr. Mark J. Jones
1996 CADILLAC DEVILLE - ALTERNATOR REPAIR
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Tien
18 years of experience
I made an appt. for Tien to come by and replace the fuel pump for my no start diagnosed by him through the inspection I had a few weeks earlier. Tien got to work on the car immediately on arrival. As in many if not all jobs, it turned out to be a more complicated than expected. In the process of changing the fuel pump, he discovered that the new fuel pump was slightly different than the one being replaced and the wiring would need to be adjusted somehow to be able to use the new one. It was amazing to see as he used his knowlege and experience to make the necessary adjustments to make the part work! He could have taken the "shortcut way" which a lot of mechanics would have done. When he removed the old fuel pump, it seems that only the fuel hose part was damaged beyond repair, but the rest of the unit was intact and probably still working. He could have maybe just changed the hose part and left the rest of the old unit as is, but decided to replace the whole unit if he could, pending the wiring adjustment mentioned above. Thanks Tien for a great job highly recommend you to everyone!
1983 CADILLAC FLEETWOOD - FUEL PUMP REPLACEMENT
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286 reviews
Dave
18 years of experience
Very professional service. I would certainly recommend his service.
1999 CADILLAC ELDORADO - WINDOW MOTOR REPLACEMENT (DRIVER SIDE FRONT)
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111 reviews
Jose
12 years of experience
Jose was great to work with. I will be booking him again in the near future. THANK YOU !!
1997 CADILLAC ELDORADO - AXLE / CV SHAFT ASSEMBLY REPLACEMENT (DRIVER SIDE FRONT, PASSENGER SIDE FRONT)
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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
1983 Cadillac FleetwoodV8-6.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.94Shop/Dealer Price$142.84 - $190.35
1994 Cadillac FleetwoodV8-5.7LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$133.72Shop/Dealer Price$175.18 - $242.13
1982 Cadillac FleetwoodV8-6.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$140.23 - $186.18
1985 Cadillac FleetwoodV6-4.3L DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$140.26 - $186.24
1981 Cadillac FleetwoodV8-5.7L DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.94Shop/Dealer Price$142.86 - $190.39
1984 Cadillac FleetwoodV8-6.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.94Shop/Dealer Price$142.83 - $190.34
1982 Cadillac FleetwoodV8-5.7L DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$106.66Shop/Dealer Price$141.39 - $188.06
1980 Cadillac FleetwoodV6-4.1LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$107.24Shop/Dealer Price$142.08 - $189.15
Show example Cadillac Fleetwood Oxygen Sensor Replacement prices

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