Damaged ambient air temperature sensor

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.

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.

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.

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.

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.

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.

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.

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.