Infiniti Q50 Engine Coolant Temperature (ECT) Sensor Replacement at your home or office.

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Engine Coolant Temperature (ECT) Sensor Replacement Service

How much does a Engine Coolant Temperature (ECT) Sensor Replacement cost?

On average, the cost for a Infiniti Q50 Engine Coolant Temperature (ECT) Sensor Replacement is $167 with $72 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2016 Infiniti Q50V6-3.0L TurboService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$258.95Shop/Dealer Price$304.94 - $420.41
2014 Infiniti Q50V6-3.7LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$292.47 - $413.59
2017 Infiniti Q50V6-3.5L HybridService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.96 - $400.44
2015 Infiniti Q50V6-3.7LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$292.43 - $413.52
2015 Infiniti Q50V6-3.5L HybridService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$292.50 - $413.64
2017 Infiniti Q50V6-3.0L TurboService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.96 - $400.44
2017 Infiniti Q50L4-2.0L TurboService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$243.95Shop/Dealer Price$289.82 - $405.20
2016 Infiniti Q50L4-2.0L TurboService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$243.95Shop/Dealer Price$290.19 - $405.86
Show example Infiniti Q50 Engine Coolant Temperature (ECT) Sensor Replacement prices

What is the Thermostatic Vacuum Sensor all about?

When the engine is started cold, it takes several minutes to reach operating temperature which is when the engine is running most efficiently. Vacuum is created whenever the engine is running and can be used to control one or more auxiliary vehicle options such as heater controls or cruise control, and is also used to control emissions systems such as exhaust gas recirculation, or EGR. It also controls vacuum for the distributor to advance or retard the spark, ensuring the engine runs as smooth as possible. Vacuum is supplied to these systems through hoses routed in the engine compartment. If engine vacuum was supplied to the EGR system when the engine was still cold, the engine would stumble or stall, and would do so until it reached operating temperature.

The thermostatic vacuum sensor is mounted in the intake manifold and uses coolant temperature to determine when the engine has reached operating temperature. Once it has warmed up, the thermostatic vacuum sensor opens and allows vacuum to flow through it to the vacuum-operated functions it controls. If the thermostatic vacuum sensor fails in the open position, it can be difficult to start the engine when it is cold and will run poorly until it warms up. If the vacuum sensor fails when it is closed, it may start properly but will lose power and run poorly at warm temperatures. It will burn fuel poorly, creating higher exhaust emissions that may fail a smog check. The engine light likely will come on when the vacuum sensor fails.

Keep in mind:

  • The thermostatic vacuum sensor is part of an emissions control system and is required to operate wherever emissions or smog regulations are enforced.

  • Any leaks in the vacuum system can mimic the symptoms of a failed thermostatic vacuum sensor. Diagnosis by a professional mechanic is the best way to confirm failure.

How it's done:

  • The vehicle battery is disconnected and the air cleaner top is removed for access
  • The defective thermostatic vacuum sensor is removed
  • The new thermostatic vacuum sensor is installed and the battery is reconnected
  • The engine is started and the thermostatic vacuum sensor is checked for operation
  • The air cleaner is reinstalled, repair is verified and the vehicle is road tested for proper operation

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

  • The Check Engine light is on
  • Engine runs poorly on initial startup until the engine warms up
  • Engine stumbles, stalls, or has a lack of power when hot
  • Vehicle fails smog check

How important is this service?

The thermostatic vacuum sensor is an important part of the vacuum system that allows the engine to run smoothly and efficiently. If it is not working properly, your engine can stall or not start and you can be stranded in an inconvenient or dangerous situation. Have it checked and replaced by a licensed mechanic as soon as possible.

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Meet some of our expert Infiniti mechanics

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Excellent Rating

(143)

Rating Summary
134
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1
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6
134
2
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Donald

40 years of experience
124 reviews
Donald
40 years of experience
Infiniti Q50 V6-3.7L - Brake Pads Replacement (Rear) - Atlanta, Georgia
Total confidence in the mechanical skill and knowledge that comes with Donald. Thanks

Michael

25 years of experience
82 reviews
Michael
25 years of experience
Infiniti Q50 V6-3.7L - Brake Pads Replacement (Rear) - Milton, Washington
Michael was great. Great service

Johnathan

7 years of experience
121 reviews
Johnathan
7 years of experience
Infiniti Q50 V6-3.7L - Battery - Chesterfield, Missouri
Jonathan was very accommodating for our no contact visit - he arrived on time and finished in a reasonable time and kept me informed.

David

15 years of experience
17 reviews
David
15 years of experience
Infiniti Q50 V6-3.7L - Brake Rotor/Disc Replacement (Front, Rear) - Antioch, California
Initially I was upset when I received a text from David stating regarding the time he would be at my location to do the job. To cut the story short he showed up after calling calling and apologizing and his demeanor was truly sincere in person. He went straight to work and even informed me that the only work needed was my rear brakes and not the front as my appointment was for both to be completed. I appreciate an honest mechanic as they are hard to come by. David completed replacing my brakes and rotors front and back in a timely manner and did a great job!

Excellent Rating

(143)

Rating Summary
134
2
1
0
6
134
2
1
0
6
Number of Infiniti Q50 services completed
1573+
services done by our mechanics
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