Mitsubishi Starion Oxygen Sensor Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

customer ratings

(33)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

customer ratings

(33)

Oxygen Sensor Replacement Estimate for Mitsubishi Starion

Mitsubishi Starion Oxygen Sensor Replacement costs $142 on average.

CarServiceEstimateShop/Dealer Price
1983 Mitsubishi StarionL4-2.6L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$196.33Shop/Dealer Price$232.82 - $314.37
1984 Mitsubishi StarionL4-2.6L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$176.33Shop/Dealer Price$212.83 - $294.40
1988 Mitsubishi StarionL4-2.6L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$195.45Shop/Dealer Price$236.73 - $332.64
1986 Mitsubishi StarionL4-2.6L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$176.33Shop/Dealer Price$212.81 - $294.36
1989 Mitsubishi StarionL4-2.6L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$176.33Shop/Dealer Price$212.85 - $294.43
1989 Mitsubishi StarionL4-2.6L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$195.45Shop/Dealer Price$236.73 - $332.64
1987 Mitsubishi StarionL4-2.6L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$181.33Shop/Dealer Price$217.70 - $299.16
1983 Mitsubishi StarionL4-2.6L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$181.33Shop/Dealer Price$218.07 - $299.82
Show example Mitsubishi Starion Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service

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

When replacing the oxygen sensor remember:

  • 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 replacing the oxygen sensor?

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 service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mitsubishi mechanics

Real customer reviews from Mitsubishi owners like you.

Excellent Rating

(33)

Rating Summary
30
0
1
0
2
30
0
1
0
2

Martin

29 years of experience
166 reviews
Martin
29 years of experience
Mitsubishi Eclipse L4-2.4L - Oxygen Sensor Replacement (Front/Upper/Upstream, Rear/Lower/Downstream) - Nashville, Tennessee
Great mechanic, really cares about his clients

Ricardo

14 years of experience
339 reviews
Ricardo
14 years of experience
Mitsubishi Montero Sport V6-3.0L - Oxygen Sensor Replacement (Front/Upper/Upstream) - Los Angeles, California
Very knowledgeable and job well done . Would use him again !

Rick

21 years of experience
44 reviews
Rick
21 years of experience
Mitsubishi Eclipse V6-3.0L - Oxygen Sensor Replacement (Front/Upper/Upstream, Rear/Lower/Downstream) - Banta, California
Rick shown up on time, but did not have a socket ranch to remove the sensor. Therefore; he had to go back to a equipment or tool store to get it and came back 30 minutes later. Rick correctly put the sensors on. Provided me with the parts, but failed to give a thorough report from his scanner he was having problems getting it to email to me. I recieved a incomplete report when I did recieve it and did not have a lot of my car information nor sensor information about the trims. I never recieved a 50 point safety inspection. Rick informed me he had 30 years experience when his profile said 20 years. He recommended a brake flush and a oil filter change without explanation why. Overall Rick was professional, completed the job with no problem.

Scott

34 years of experience
41 reviews
Scott
34 years of experience
Mitsubishi Montero V6-3.5L - Oxygen Sensor Replacement (Rear/Lower/Downstream) - Tacoma, Washington
Scott is fast and good. He is a lil late coz he came from a far town but when he got here, he got it done fast. Thanks Scott I appreciate the help.

Excellent Rating

(33)

Rating Summary
30
0
1
0
2
30
0
1
0
2
Number of Mitsubishi Oxygen Sensor Replacement services completed
363+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mitsubishi MECHANICS
700+
experts on our platform

Recent articles & questions

How Long Does an Ambient Temperature Sensor (Switch) Last?
In In many late-model vehicles, the need to manually adjust heat and air conditioning has been eliminated. You can actually set your car’s computer to regulate the cooling and heating process based on the temperature at which you feel most...
The Best Tool to Diagnose Sensor Failures
Mechanics may regularly run into sensor failures when performing a repair service. Automotive oscilloscopes help properly diagnose these issues.
How to Replace a Washer Fluid Level Switch
The washer fluid level switch fails when the Windshield Fluid Warning Light stays illuminated or there are unusual noises coming from the washer pump.

Car started clicking before dying

A faulty camshaft sensor will definitely cause the Check Engine Light to illuminate; there will most likely be a fault stored for it, if it is, indeed, faulty. All other fault codes will need to be read out as well....

Speedometer not working correctly

Your assumption sounds about right, either the sensor and or the cable are sending some mixed signals to the dash and it doesn't know what to do with it. Have a certified mechanic take a look at your speedometer components...

check engine light

When the radiator broke, the engine coolant sensor or other sensors may have set a code in the computer. These codes and the Check Engine Light will not go away until the vehicle is scanned and codes cleared if repairs...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com