Damaged ambient air temperature sensor

Will the damaged sensor affect RPM's? Will it affect car's performance?

My car has 13000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
The short answer is yes, but only slightly. The ambient air temperature sensor provides information for the engine management system to make the correct fuel air mixture for the local temperature. If the sensor is damaged, it usually causes a high voltage signal that tells the ECU that it is really cold outside, like below zero cold. The ECU will enrich the mixture to compensate for the extreme cold, so unless you’re driving in ten below zero weather, the fuel quantity will not be correct, but when the car warms up, another compensation takes place in response to the oxygen sensor and the fuel quantity is mostly corrected. There will just be a slight alteration in the range of the mixture.

If the ECU recognizes that the sensor is damaged, it will substitute a value for the faulty sensor, one for air at about 70 degrees and illuminate the Check Engine Light. If that is the case, you will probably not notice any difference in performance at all. If your car is performing badly and not revving as it should, your problems probably go deeper than an ambient air temp sensor. By contacting YourMechanic, you can have a technician come to your home and determine why the car is slow to accelerate and recommend a fix.

How to Identify and Fix Common car Problems ?

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Problems starting. Reduced engine power. Increased fuel consumption.

1 Answer. Most of the time, intake air temperature is not the same as ambient air temperature. This is because the air absorbs heat from the hot engine bay area before the intake air temperature sensor (IATS) measures its temperature.
Engine stalling, rough idling, engine stumbling, and random surges of power are commonly associated with IAT sensor failure. These are concerning symptoms, and they can only worsen with time.
Without a proper signal from the mass air flow sensor, the powertrain control module (PCM), which manages the engine, transmission, and other systems in your car, won`t know how much fuel the engine needs. This can either cause the engine to run too lean (too little fuel) or too rich (too much fuel).
tl;dr: Ambient air temperature should generally not interfere with engine efficiency or fuel consumption, but will affect overall power output. Do not confuse efficiency with power output.
These are the air filter, the mass airflow sensor, and the throttle body and intake manifold. The air filter cleans the air as it enters the engine, removing debris such as dirt and pollen. The mass airflow sensor detects how much air is entering the engine. This allows for adjustments that optimise fuel burning.
Like most electronic components in your vehicle, the air charge temperature sensor can be expected to last for about five years. Signs that your car`s air charge temperature sensor may need to be replaced include: Misfires. Hard starts.
If your coolant temperature sensor is failing or has failed, do not continue driving your vehicle. You should get it fixed right away. A faulty sensor can lead to overheating. This will cause damage to your engine as well as other components, which will be very expensive to fix.
Without the information provided by the ambient temperature sensor, your car`s computer does not have sufficient data to control the interior temperature, and will revert to manual HVAC control. You`ll still be able to use your air conditioner and heater, but only in manual mode, not in auto.
It`s not safe to drive with a bad mass air flow sensor. When this sensor is bad the check engine light should be on, the engine can backfire, severe drivability issues, car can stall out at the wrong time. Get it repaired.
Can I Still Drive with a Bad Thermostat? The easy answer to this question is no. While your car may be physically able to move and get you from Point A to Point B, you will want to refrain from operating your vehicle. This can lead to more parts of your vehicle being damaged, especially if the engine is overheating.
If you unplug the mass air flow sensor the car will start. If you try to plug it in while it`s running the car will die.
If you unplug the mass air flow sensor the car will start. If you try to plug it in while it`s running the car will die.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

There was a temperature change in my car.
ANSWER : Hi there. The thermostat on the air conditioning is not functioning correctly. I recommend replacing the thermostat temperature scanner for your air conditioning system. The thermostat will determine when the blend doors are to activate and when the air conditioning clutch is to engage. If you need further assistance with your air conditioning system, then seek out a professional, such as one from Your Mechanic, to help you.

My code reader says I have a bad mass air flow sensor ans crank shat sensor test drive ran better shut off & engine Lt. Same code
ANSWER : Hi there. The problem you are describing, sounds like you may have a poor connection in the connector at the mass airflow sensor. Although, sometimes aftermarket parts do not perform as well as factory (OEM) parts. Check for corrosion and/or wide spacing in the terminal ends. Compare the terminal ends in the connector using a flashlight to see better. The terminals can be tightened. If you are not comfortable with doing that, a replacement pigtail (connector) is available. You vehicle may require further diagnosis performed with a scanner that provides parameters that can be viewed as the fault occurs. If that is the case, I recommend having your vehicle’s electrical circuits inspected in order to pinpoint the underlying fault.

Where is the ambient air temperature sensor located in a 94 Lincoln town car
ANSWER : The ambient air temperature sensor is located in front of the a/c condenser in the center of the vehicle mounted just below the hood latch on the support bracket. The sensor will give temperature reading s from about -40 to 240 degrees F. If you are getting display readings that are jumping between -38 and 100 then you may have a sensor wiring that is opening up or the connection has corrosion in it. Have a mechanic from YourMechanic come and check the wiring by monitoring the display while moving the wiring slightly to see if the open circuit can be found. You most likely have a wire connection to the sensor that needs cleaned and a small amount of dielectric lube put in connector to stop the connection corrosion.

Where is the ambient air temperature sensor located on a 2016 impala LTZ?
ANSWER : There is more than one ambient temperature sensor on your vehicle. The engine air intake system has an ambient temperature sensor located in the air duct after the air filter. That sensor is part of the mass airflow sensor assembly. There is also an outside air temperature sensor used to both report temperature and provide an input signal to the HVAC system. The sensor signal is a part determinant of how much cooling or heating is delivered to the passenger compartment. That sensor also affects the HVAC mode and blower motor speed. The sensor is located in the right hand front of the engine compartment, on the radiator support near the horn assembly.

If you think that there might be a fault with the ambient temperature sensor, a certified Mechanic, dispatched by YourMechanic right to your location, can check this out if you request a temperature sensor component diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Why is my air system blowing out hot air in spurts and why is the temperature gauge nearing hot while in use?
ANSWER : This can be caused for a variety of reasons such as a malfunctioning thermostat, a radiator not flowing properly, a faulty coolant temp sensor or AC refrigerant not properly being supplied to the AC compressor. Your car’s AC system puts a heavy strain on your car’s engine when it runs as it requires a lot of power to run. When the AC compressor comes on it puts additional strain on the motor that may be already struggling to stay cool as a result of any of the issues named above. I would recommend having an expert from YourMechanic come to your home to diagnose and repair.

Hot air mixed with cold blows from air conditioning
ANSWER : Hey there. You will most likely have to have a mechanic bypass the heater coolant lines to have this resolved. Your A/C may not be controlling the air flow inside the evaporator correctly out of the vents and may be the blend door actuator stuck in the heat position. Have the AC system diagnosed first before bypassing the heater.

Ambient air temperature sensor location
ANSWER : Hi and thank you for contacting YourMechanic. If I’m not mistaken, the sensor is located directly below the front number plate in front of the radiator fan. If you look through the bottom grill you will see where it’s mounted. The loom is part of the front bumper one, including frog lights and headlights washers. It’s plugged on the front end, on the left side of the car under the headlight. Hopefully this helps! I recommend having a local certified technician replace or install the ambient air temperature sensor for you if you need further help.

A/c works but has no ambient air temp sensor
ANSWER : Hello there. It sounds like something weird happened when you connected the new sensor and rewired it.

From what you have described, there may a a short somewhere in the system that is causing the AC system to act up, or the fuse is blown.

If the fuse hole is empty, it may be an optional one from the factory for cars that had additional or other options from your vehicle.

A qualified Technician such as one from YourMechanic will be able to diagnose this fault and perform any repairs required.