SOURCE: how do I change the ambient air sensor fond the
squeez the tabs and it will come out and then just pop the new one in
SOURCE: is the ambient temp sensor under the grill located
You should be able to access the sensor through the lower opening of the front bumper, right in the center of the vehicle.
Testimonial: "Thank you for your help. I did not know where to find this."
SOURCE: 2001 Tahoe LT 5.3.
There's a feed from the engine coolant temperature sensor into the AC controller as if the controller thinks the engine is overheating it'll shut down the AC to reduce the load on the cooling system
Try unplugging the cooling sensor on the engine ( follow the radiator top hose back to the engine as the sensor is close to this) and see if this replicates the problem, if it does then you know thats the issue.so the coolant temperature sensor needs to be replaced.
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Also the possibility is faulty evaporator temp sensor.It may be sending a false signal to the climate control module that the evap is around freezing temperature thus shutting down the compressor. The evaporator temp sensor is located on the evaporator housing, in the a/c system, and monitors the temp to prevent the evaporator from freezing up. If the AC control module sees the temp going too low, it will send a communication message to the pcm to turn off the a/c compressor until the evap temp returns to an acceptable range. The other possibility is the high pressure switch located on the line in the right hand side whell arch.
Why I mentioned the high pressure switch because as the temp increases the pressure in the system increases and if the ECU sees this signal from that pressure switch in the wheel well on the a/c line it will shut down the compressor. You can test this with a digital voltmeter or install a set of gauges to the high and low side service ports and see where the pressure go. It also may be the temp sensor element on the compressor itself.
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This should help.Thanks.Helpmech.
SOURCE: i've been trying to find
The Amibient temp sensor should be located, in the front of the car, close to the hood latch. Let me know how you make out. It is plastic and black in colour about 2inches in length and has around 2 or 3 wire connection to it.
Good luck
Jay
SOURCE: Ambient temp sensor replacement
The ambient air temp sensor is located on the radiator support bracket at the top (see figure below, item 1)
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Sorry for that. The outside air temperature sensor is located on a bracket on the drivers side in the front of the car just in front of the AC Condenser core, you must remove the plastic trim panel over the cavity between the radiator support and the front bumper to see it.The sensor is black plastic and screwed into an "L" bracket with a 2 wire connector going to it, see picture of the sensor below. Keep in mind that there are two air temperature sensors, one is for the display that shows the outside air temperature and the other is for the auto AC and is located behind the glove box.
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