defective outside air sensor
Thread Starter
Drifting
Joined: Jul 2017
Posts: 1,365
Likes: 471
From: S.E. Pennsylvania
defective outside air sensor
I have a '98 with NO codes posted. Warm air although the outside air temp shows 54F. A/C button flashes but does not stay lit. Today it is 80F here in PA. Took the car out up to 50 mph and the outside air temp went up to 62. A/C button still only flashes. Set to auto mode and 73F.
The mode button changes airflow correctly. The system was recharged last July when I bought the car. Should the ambient outside temp reflect the actual outside temp? IOW should it show somewhere around 80F? Does the 62F reading by the sensor indicate a defective sensor?
If the reading is 62F shouldn't the A/C engage anyway? (above 40F). My understanding is that if the compressor is defective the button will flash and no A/C. Also, if the system requires recharging the same thing will happen - flashing button.
I read about 50 posts after searching from 2007 on up to 2012 and some similar some different. The car has 19k on the clock...
TIA to all...
The mode button changes airflow correctly. The system was recharged last July when I bought the car. Should the ambient outside temp reflect the actual outside temp? IOW should it show somewhere around 80F? Does the 62F reading by the sensor indicate a defective sensor?
If the reading is 62F shouldn't the A/C engage anyway? (above 40F). My understanding is that if the compressor is defective the button will flash and no A/C. Also, if the system requires recharging the same thing will happen - flashing button.
I read about 50 posts after searching from 2007 on up to 2012 and some similar some different. The car has 19k on the clock...
TIA to all...
Last edited by bc6152; May 9, 2018 at 03:54 PM.
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you can try to unplug it, clean the connection and plug it back in that may work or there is a reset procedure to get the display to read correctly which you can also try
When the Front Defrost, Rear Defog and fan up buttons are pressed simultaneously.
Updates temperature display instantly.
When the Front Defrost, Rear Defog and fan up buttons are pressed simultaneously.
Updates temperature display instantly.
Thread Starter
Drifting
Joined: Jul 2017
Posts: 1,365
Likes: 471
From: S.E. Pennsylvania
you can try to unplug it, clean the connection and plug it back in that may work or there is a reset procedure to get the display to read correctly which you can also try
When the Front Defrost, Rear Defog and fan up buttons are pressed simultaneously.
Updates temperature display instantly.
When the Front Defrost, Rear Defog and fan up buttons are pressed simultaneously.
Updates temperature display instantly.
If the outside air sensor is sending 62F. shouldn't the A/C button stay on, compressor engage, and cool the car?
Safety Car
Joined: Mar 2017
Posts: 3,774
Likes: 940
From: Orlando Florida
Mine didn't have a sensor, so the sensor connector was plugged into the hood lamp harness. Definitely brilliant.
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Thread Starter
Drifting
Joined: Jul 2017
Posts: 1,365
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From: S.E. Pennsylvania
Just to be clear, for R/H side of radiator you mean driver's side standing in front of the car...
Thanks for the info, really appreciated...
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Team Owner
Joined: Dec 1999
Posts: 174,312
Likes: 1,218
From: Here
Pilot of Beer Force 1
Tampa Regional Coordinator
CI 4-5-6-7-8 Veteran
Organizer St. Jude Fundraiser
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Thread Starter
Drifting
Joined: Jul 2017
Posts: 1,365
Likes: 471
From: S.E. Pennsylvania
Thread Starter
Drifting
Joined: Jul 2017
Posts: 1,365
Likes: 471
From: S.E. Pennsylvania
Replaced the sensor today with an AC Delco new sensor. The connector was very clean and not corroded. The outside temp reading was 54F. when I started the car and never changed. Took the car out up to 50 mph and the display remained at 54F. Pressing the A/C button gets 3-4 flashes and off. No cold air at all. Tried pressing the front defrost, rear defrost, and fan up simultaneously and no change in the outside temp display, still reads 54F. NO CODES SET...