Skip the auto shop - Our mechanics make house calls

Q: Damaged ambient air temperature sensor

asked by on

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

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

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.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Damaged ambient air temperature sensor

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Loose connection in window switch

Hi. It is possible that you can have a bad connection in the switch. The other possibility is the power window motor is bad. Striking the motor at times will help it work intermittently. Removing the actual door panel, exposing...

Q: Hard time starting my truck

The symptoms you describe are in line with a faulty air charge temperature sensor. As you may know, the air charge temperature sensor measures the temperature of the air coming into the engine. As cold air is much more dense...

Q: VW Passat won't start

Hi There, This could be related to many different possibilities, but is most likely a bad connection between the battery and the starter relay. The starter relay directs power from the battery to the starter solenoid which then engages the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.