Evaporator Temperature Sensor (Switch)
The issue i am having is as described in one of your articles.
See the link: https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-evaporator-temperature-sensor-switch.
The compressor works continually without cutting off. There was a time when it worked briefly but suddenly stopped cutting off.
I learnt the are two ETS under the glove box near the evaporator and i would like to know the part number for easy replacement.
Thank ou for the good works.
My car has 112786 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hello. It is possible that the problem is with the evaporator temperature sensor. If this fails, it can affect the efficiency of the AC system. Most of the time though, when the compressor continually works on this car it is because the system is low. If the system is full then the sensors should be tested. There are different part numbers depending on if it is a manual or automatic system. If you want to have this AC issue looked at, consider having a technician from YourMechanic come to your home or office to diagnose the AC issue and replace the evaporator temperature sensor if necessary.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Where is the evaporator temperature sensor located? The evaporator temperature sensor is mounted on the evaporator. Look for the evaporator fin temperature sensor inserted into the lower right / left side of the evaporator, fastened to the case with locking tabs, and sealed to the case with a seal.
Symptoms of a Bad or Failing Evaporator Temperature Sensor (Switch) Common signs include lack of cold air coming from AC, temperature fluctuations, and the AC compressor not activating.
Most often, the evaporator temperature sensor can be accessed underneath the instrument panel or behind the glove compartment.
The ambient temperature sensor (switch) is located either behind the front grille or in the front bumper.
In either system operation of the temperature control valve acts to control pressure in the evaporator and thus controls the temperature. With the sensor located in the air stream, the system functions to control the air stream temperature and will compensate the system for frost build-up on the evaporator.
The evaporator temperature sensor is used to measure the evaporator core temperature. The evaporator cools the refrigerant in the HVAC system.
The coolant temperature sensor, also known as the coolant temperature switch, is an engine management system sensor that is used to monitor the temperature of the engine`s coolant. Most coolant temperature sensors operate using electrical resistance to measure the temperature of the coolant.
The temperature sensor is in the front bumper.
Error code P0128 indicates that your engine coolant temperature is below the thermostat regulating temperature. This means that your Engine Control Module (ECM) or Powertrain Control Module (PCM) has recognized that your engine is running cooler than it`s supposed to.
Temperature sensors measure air and water temperature and adjust the heating and air conditioning to raise or lower the air temperature based on the programmed setpoint preventing wasted energy. You can also use the sensors` data to learn about a room`s airflow and air quality.
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What is the second switch called on my headlight switch?
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I did replace the heater core and two sensor the crank sensor and camshaft sensor it didn’t work can it be the computer
If the check engine light is on, what kind of codes is the system detecting? Do you have spark at the plugs? If you have spark, does spritzing some starter fluid give you a momentary startup? If so, there is a fuel issue. More symptoms and information on the car’s behavior before and after the parts you replaced would be very helpful. At this point, I would recommend an inspection from YourMechanic.com to diagnose this car starting problem, get an accurate assessment of damage and cost estimate for repairs. YourMechanic.com can dispatch a mobile, professional mechanic to your location to help you get your car up and working again.
I have a bad oxygen sensor, bad power steering sensor, and a bad cam shaft sensor? Should I replace any of them?
When you say you have three bad sensors I can only assume you have had them tested and the end result is three bad sensors. If they tested bad then they should be replaced. The power steering sensor senses the load of the steering on the engine so it can raise the idle during parking maneuvers. The O2 sensor is used for fuel control and it may effect engine power and fuel mileage. The camshaft sensor cay cause no starts, engine running problems and all three will turn on the check engine light.
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Just replaced head gasket, changed crack sensor new plugs. The check engine light is on, but dim, the only other light that the dash is a normal battery indicator. The fuel pump is not running when switch is turned on, the power windows don’t work, it turns over but not firing. It’s like only one part of the system is working. Also the heater fans work even if the switch is off.
I would first look at the diagnostic trouble codes. Those codes are available because the check engine light is on. If the fuel pump is not running (momentarily) at key on, that fault alone will prevent the car from starting as there will be no fuel pressure. Pump output and pressure can be directly tested and you can also check for electrical power to the pump. To find out why the engine will not run, the recommended diagnostic is a no start diagnostic. If you request that service, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
o2 sensor reads 0 volts.
You may need to look at the code P0122 since it pertains to the throttle position sensor and this can affect all the drive symptoms you are having. The O2 sensor readings seem to be normal and you are not getting any O2 sensor codes. Your reading of between .2 and .4 volts shows that the converter is doing its job and you have high O2 in the exhaust flow. This is a common and normal reading. When the catalyst is new you may not see the O2 sensor go above .45 volts but as a catalyst ages the sensor will switch more often above the .45 volts until it cannot clean the exhaust anymore. I’d suggest getting some help with a certified technician, such as one from YourMechanic, they will help you diagnose your Check Engine Light further and help you fix it accordingly.