Mechanics

TEMPERATURE SENSOR

1995 Chrysler LHS

Air Conditioning problem
1995 Chrysler LHS 6 cyl Front Wheel Drive Automatic 150000 miles

Sometimes when I start my car, my outside temperature indicator remains set at the temperature that it indicated the last time the engine was shut down, although the outside air temperature has increased.

Then, a few starts later, it indicates the correct outside air temperature and moves up or down a degree or two as I'm driving, as it's supposed to.

When it's hot out, my climate control a/c doesn't put out as much cold air as it should. I think that it is being told, whenever my temperature indicator is stuck on a low reading, that it is colder out than it actually is.

At those times when the temperature indicator is working properly, my a/c puts out much more cold air.

Can anyone tell me where it outside sensor for this temperature indicator is located or what I can do about this problem?

Thank you
Avatar
ArtTiessen
July 19, 2008.



Try this and record the codes. Then look at the chart.
SELF-DIAGNOSTIC SYSTEM Entering Self-Diagnostics 1. Set A/C-heater control panel to display degrees Fahrenheit. Start engine (vehicle not moving) and set temperature control to 75 °F. To enter self-diagnostic mode, simultaneously press and hold floor, mix, and defrost buttons. See Fig. 1. When ATC panel display begins to blink, release all 3 buttons. 2. The display will continue to blink until it completes its tests and calibrations. Any ATC-related diagnostic trouble codes stored in BCM will be displayed when blinking stops. If there are no trouble codes, system will return to normal operation. 3. Trouble codes will appear on display in numerical form. Only one number will be displayed at a time. Press panel (vent) button to scroll through any additional trouble codes. See DIAGNOSTIC TROUBLE CODES table for list of codes. Exiting Self-Diagnostics & Clearing Codes To exit self-diagnostics, turn ignition off. To clear codes, disconnect negative battery cable for at least 10 minutes. DIAGNOSTIC TROUBLE CODES NOTE: If in-vehicle temperature sensor is disconnected while it is operating, Code 26 will set and automatic A/C-heater control panel display will go blank. To correct condition, clear Code 26 from BCM. See EXITING SELF- DIAGNOSTICS AND CLEARING CODES. Code Affected Circuit/Sensor 23 ATC Blend Door Feedback Failure 24 ATC Mode Door Feedback Failure 25 Ambient Temperature Sensor 26 ATC In-Vehicle Temperature Sensor 27 Sun Load Sensor Failure 31 ATC Recirculation Door Stall Failure 32 ATC Blend Door Stall Failure 33 ATC Mode Door Stall Failure 34 Engine Temperature Message Not Received 35 Evaporator Temperature Sensor Failure 36 ATC Panel Communication Failure NOTE: For HVAC plenum 10-pin connector terminal identification, see Fig. 4. Page 1 of 1 A/C-HEATER SYSTEM - AUTOMATIC -1995 Chrysler LHS

Merlin2021
Jul 19, 2008.