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How do you reset ambient air temperature on 1995 corvette

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Disconnect the battery for 5 minutes

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1986 Corvette heater / AC problem. Blower and air distribution all work, but cant get, warm or cold air. Only ambient temperature. The ext and int sensors are functional. Where do I look next?


If you haven't yet, join some Corvette forums online. You'll get a wealth of information there. This sounds like a possible core problem but it's hard to diagnose over a keyboard. Good luck with it!

Feb 04, 2017 | AC Cars & Trucks

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How do you take apart the dashboard to replace the ambient air temperature sensor on a 2007 Buick Lucerne?


ambient air temperature is the air outside the cabin not inside it, otherwise it would rise as the car warmed up. Or do you mean the temperature that the heater works from? In which case, Google

Buick Lucerne Remove Dashboard.

Someone will have a YouTube video.

Feb 04, 2016 | 2007 Buick Lucerne

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My outside air temp is reading at -40 on my 2008 Pontiac Torrent. What is the right sensor and where is it located?


Ambient Air Temperature Sensor (UH9)
At the front of the vehicle, at the lower left side of the front bumper bar
Ambient Air Temperature Sensor (UH9)
Pin
Wire
Circuit
Function
A
0.35 L-GN/BK
735
Ambient Air Temperature Sensor Signal
B
0.35 YE
61
Low Reference

Jul 22, 2015 | 2008 Pontiac Torrent

1 Answer

What does code P0072 mean for a 2011 Chevy Equinox


P0072 - Ambient Air Temperature Sensor Circuit Low Input

- Faulty ambient air temperature sensor
- Ambient air temperature sensor harness is open or shorted
- Ambient air temperature sensor circuit poor electrical connection

Mar 11, 2015 | 2011 Chevrolet Equinox

1 Answer

DTC code p0071 what is this and how to repair


- Faulty ambient air temperature sensor
- Ambient air temperature sensor harness is open or shorted
- Ambient air temperature sensor circuit poor electrical connection

Jan 30, 2015 | Cars & Trucks

2 Answers

What do the codes p0072 and p0073 mean on my 2008 Dodge avenger? w


Well, I would say that it means that SOMEBODY is confused!

Diagnostic Test Code (DTC) P0072 is defined by SAE J2012 as "Ambient Air Temperature Sensor Circuit Low" DTC P0073 is defined as "Ambient Air Temperature Sensor Circuit High"

I do not know how the ambient air temperature sensor circuit could be faulted both HIGH and LOW at the same time.

The only thing I have ever seen cause something like this is when people try to install aftermarket "performance chips" on their vehicles which "lie" to the computer about what the ambient air temperature is.

Apr 23, 2012 | 2008 Dodge Avenger

1 Answer

How do I reset the outside temperture gauge


you can't reset it. Try replacing the sensor.

SECTION 412-04: Control Components 2002 Explorer/Mountaineer Workshop Manual
REMOVAL AND INSTALLATION Ambient Air Temperature Sensor Removal and Installation
  1. Remove the radiator grille. For additional information, refer to Section 501-08 .
  1. Remove the three upper pin-type retainers in the radiator air deflector.
  1. Position forward the air deflector.
  1. Remove the ambient air temperature sensor.
    1. Detach the pin-type retainer.
    1. Disconnect the electrical connector.
    • Remove the ambient air temperature sensor.
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Nov 23, 2009 | 2002 Mercury Mountaineer

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04 Tahoe AC blows hot air on drivers side but resets if restarted


A educated guess I would have to say there is a problem with HVAC control module ! electronics you know ! But that's not the way to do things ! There could be codes stored in the module. The Chevy dealer my have a reflash bulletin for this problem . Then can reflash , reprogram the control module ! The first place to start is checking for codes in the HVAC module.
The HVAC control module is a class 2 device that interfaces between the operator and the HVAC system to maintain air temperature and distribution settings. The battery positive voltage circuit provides power that the control module uses for keep alive memory (KAM). If the battery positive voltage circuit loses power, all HVAC DTCs and settings will be erased from KAM. The body control module (BCM), which is the vehicle mode master, provides a device on signal.
Air Temperature Sensors The air temperature sensors are a 2-wire negative temperature co-efficient thermistor. The vehicle uses the following air temperature sensors:
?€¢
Ambient Air Temperature Sensor

?€¢
Inside Air Temperature Sensor Assembly

?€¢
Inside Air Temperature Sensor Assembly-Auxiliary

?€¢
Upper Left Air Temperature Sensor

?€¢
Upper Right Air Temperature Sensor

?€¢
Lower Left Air Temperature Sensor

?€¢
Lower Right Air Temperature Sensor

?€¢
Upper Air Temperature Sensor-Auxiliary

?€¢
Lower Air Temperature Sensor-Auxiliary
A signal and low reference circuit enables the sensor to operate. As the air temperature surrounding the sensor increases, the sensor resistance decreases. The sensor signal voltage decreases as the resistance decreases. The sensor operates within a temperature range between -40?° to +101?°C (-40?° to +215?°F). The sensor signal varies between 0-5 volts.
The input of the duct air temperature sensors are different from the ambient and inside air temperature sensors. The HVAC control module converts the signal to a range between 0-255 counts. As the air temperature increases the count value will decrease.
If the HVAC control module or auxiliary HVAC control module detects a malfunctioning sensor, then the control module software will use a defaulted air temperature value. The default value for the ambient and inside air temperature sensors will be displayed on the scan tool. The default value for the duct air temperature sensors will not be displayed on the scan tool. The scan tool parameter for the duct air temperature sensors are the actual state of the signal circuit. The default action ensures that the HVAC system can adjust the inside air temperature near the desired temperature until the condition is corrected.
The ambient air temperature sensor mounts underhood and can be affected by city traffic, by idling, and by restarting a hot engine. Therefore, the HVAC control module filters the value of the ambient air temperature sensor for temperature display. The ambient air temperature value is updated under the following conditions: Or you can just buy a new control module an hope that it fixes it. $89.00 at www.partsgeek.com

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Sep 18, 2009 | 2005 Chevrolet Silverado

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