C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Outside temp sensor getting weird on me

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Old Apr 19, 2017 | 08:58 PM
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Default Outside temp sensor getting weird on me

Huh....

My outside temp gauge/reader is getting wonky on me and I'd like to get a "read" on it.

Recently it seems to get stuck at 70 (default?) as displayed on my A/C center console display. It will remain this way for miles and miles and then all of the sudden jump to a correct temperature (today 86) and seem to move correctly after that.

Is my outside temp sensor starting to go on the fritz or is this something else? BTW... my HVAC system works great for both heat and AC with all the doors moving as they should.

Thanks!
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Old Apr 19, 2017 | 09:42 PM
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Originally Posted by billschroeder5842
Huh....

My outside temp gauge/reader is getting wonky on me and I'd like to get a "read" on it.

Recently it seems to get stuck at 70 (default?) as displayed on my A/C center console display. It will remain this way for miles and miles and then all of the sudden jump to a correct temperature (today 86) and seem to move correctly after that.

Is my outside temp sensor starting to go on the fritz or is this something else? BTW... my HVAC system works great for both heat and AC with all the doors moving as they should.

Thanks!
Check the resistance values of the OAT and if they're different from the values expected - replace it! If you can catch it when you're seeing a large discrepancy. I don't believe there's a "default" - certainly NOT 70°. Is there any codes in the AC display?

The OAT resistance to temp is in the FSM -
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Old Apr 20, 2017 | 06:37 AM
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push on the face of the climate control display to freshen up the contacts.

if thT doesnt work, remove it and reinstall making sure you push the face of the display deeper onto its contacts
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Old Jan 11, 2018 | 09:50 PM
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Bill,

Did you ever replace the sensor? Mine is starting to go whacky too. All of a sudden it will climb 20 or more degrees. Then just as quickly drop back. I suspect it’s just the sensor.
H
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