How Long Does a Cylinder Head Temperature Sensor Last?

The engine’s performance is largely based on temperature measurements performed by the engine control module (ECM), also known as the vehicle’s computer. As the temperature of the engine increases, the resistance decreases which means the voltage drops. The computer receives this signal and converts it to a temperature value.

For example, when the engine is cold, it needs more fuel to start effectively. On the opposite end, when the engine is warm, it needs less fuel. The cylinder head temperature sensor monitors these temperatures and reports back to the ECM so it can adjust the temperature as needed.

The cylinder head temperature sensor can read from -40 degrees Fahrenheit to 260 degrees Fahrenheit. Furthermore, it consists of two sensors, one that monitors the high temperature and one that monitors the low temperatures. If the cylinder head temperature sensor is not providing the correct readings, the engine can have a variety of issues such as stalling, long cranking times, and hesitation while accelerating.

If you suspect there is an issue with the cylinder head temperature sensor, a professional from YourMechanic can read the sensor’s resistance. Furthermore, they will then compare the resistance to the temperature laser reading to ensure they match up. If there is a discrepancy between the readings, it could be a wiring issue or the sensor has gone bad. The cylinder head temperature sensor may need to be replaced or the wiring may need to be redone.

Since the cylinder head temperature sensor can go bad over time, or the wiring becomes bad, there are a few symptoms you should be aware of that indicate it is time for a replacement.

Signs that indicate you need a cylinder head temperature sensor replacement include:

  • You have trouble accelerating while driving your vehicle
  • The engine stalls when you start it cold
  • The idle speed stays low when the engine is cold
  • There is a long cranking time when you start your vehicle
  • Your vehicle hesitates when you accelerate

Without a proper working sensor, your vehicle may not work right so this repair should be completed as soon as you notice the problem.


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Recent Cylinder Head Temperature Sensor Replacement reviews

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Michael

16 years of experience
606 reviews
Michael
16 years of experience
Ford F-150 V6-4.2L - Cylinder Head Temperature Sensor - Marietta, Georgia
Michael's experience pays off when helping his customers. He makes you aware of things you have not taken into account. That is a valuable asset for Michael in helping people keep their vehicles running.
Acura Legend - Pre-purchase Car Inspection - Duluth, Georgia
I had Michael go out and inspect a 1993 Acura Legend for me in Georgia. He called me and gave the car a rave review with only small cosmetic issues here and there. I went ahead and purchased the vehicle and had it sent out to DC. Upon delivery, the car jerks when you go in reverse and shift from 1st to 2nd gear. There's also a buzzing noise coming from the rear. After having the car inspected by the Acura dealership, they informed the engine mounts need to replaced and that the buzzing noise is from my rear wheel hubs/bearings which also need to be replaced. All together, I was quoted $1842 from an Indy mechanic. I'm very disappointed that these issues were not brought up during our initial conversation. From the moment you start the car and put it in gear, the jerk and noises are very apparent. Now I have to shell out an additional $1842 since these items need to be fixed in order to pass state inspection and register the vehicle. I'm not a happy camper

Attila

19 years of experience
906 reviews
Attila
19 years of experience
BMW 328xi L6-3.0L - Valve Cover Gasket - Newark, New Jersey
One of the best mechanics to ever work on my BMW. Very pleased with his professionalism.
Chevrolet Trailblazer - Check Engine Light is on - Linden, New Jersey
This is one of the best ways to help people (especially females) like myself to not get ripped off because of lack of knowledge. I feel very comfortable and relieved about my vehicle now. About time! This type of service is a God send. I truly thankyou. Will be using this from now on. Definitely will spread the word.

Bryant

12 years of experience
596 reviews
Bryant
12 years of experience
Ford Escape L4-2.5L - Cylinder Head Temperature Sensor - Indianapolis, Indiana
Bryant goes above and beyond. Professional, honest and gets the job done.Quick, efficient and always friendly.

Jonathan

22 years of experience
304 reviews
Jonathan
22 years of experience
Mercury Sable V6-3.5L - Cylinder Head Temperature Sensor - Denver, Colorado
It was such a great experience to work with Jonathan! My car needed a new cylinder head temperature sensor (an intermediate to expert skilled job). He was right on time for the appointment, he shared a little bit about his work experience then proceeded to get started with the job. I checked in every 30-40 mins and he would patiently explain exactly what he was doing and how it affected the car. I've never felt this level of comfort with any shop or other mechanic. Once he was done with the fix, he cleaned everything up and my car was all set. He was professional, friendly, highly skilled and timely. Can't expect much more than that from a mechanic. I would gladly give him my business again!

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