Toyota 4Runner 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 Toyota 4Runner 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
2003 Toyota 4RunnerV6-4.0LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$258.95Shop/Dealer Price$304.94 - $420.41
1991 Toyota 4RunnerL4-2.4LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.96 - $400.44
1989 Toyota 4RunnerL4-2.4LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.96 - $400.44
1999 Toyota 4RunnerV6-3.4LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.94 - $400.40
2011 Toyota 4RunnerV6-4.0LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.97 - $400.47
2003 Toyota 4RunnerV8-4.7LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.96 - $400.44
2008 Toyota 4RunnerV6-4.0LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$243.95Shop/Dealer Price$289.82 - $405.20
2009 Toyota 4RunnerV6-4.0LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$243.95Shop/Dealer Price$290.19 - $405.86
Show example Toyota 4Runner 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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Jose

25 years of experience
64 reviews
Jose
25 years of experience
Toyota 4Runner V6-3.4L - Alternator - Vallejo, California
Jose explained why I didn't really need to replace my alternator but instead replace my battery because it was not holding a charge even. He also checked fluids, tires, etc. He seemed very knowledgeable and his explanation was very clear. I appreciated getting the info that way. I wouldn't have gotten that clear of an explanation from mechanics at a service station because most service stations don't allow customers in the work area.

Rodney

36 years of experience
542 reviews
Rodney
36 years of experience
Toyota 4Runner L4-2.4L - Window Regulator Replacement (Driver Side Front) - Elk Grove, California
We had another great experience with Rodney. He called ahead of the appointment and asked if he could arrive early. He arrived with the parts and was ready to begin the repair. Several shops told us that the parts for my vehicle were no longer available. Rodney located the parts and ordered them for the repair. Rodney originally said the repair would take several hours, but Rodney was able to complete the repairs in approximately one hour. He showed me the old parts and offered them to me if I wanted. Rodney was very professional and polite. The area was completely cleaned up before he left, and he answered all of our questions. We would recommend Rodney to our friends, and we would ask for him again if another repair was needed.

Grzegorz

41 years of experience
473 reviews
Grzegorz
41 years of experience
Toyota 4Runner V6-3.4L - Smell in the car - San Francisco, California
On time and super helpful. Thanks Grzegorz!

Royal

16 years of experience
80 reviews
Royal
16 years of experience
Toyota 4Runner V6-4.0L - Battery - San Antonio, Texas
Royal was very professional and polite. He completed the work quickly.

Excellent Rating

(1,134)

Rating Summary
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10
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