Thread: Ambient air temp sensor & A/C

It's August and my car shows outside air temps at around 23*F. This has shut off my A/C. I replaced the ambient air temp sensor and nothing changed. Still shows wrong temps and no A/C. Need some help here cuz I'm dieing in this heat.

it is possible the new one was bad new in the box.

Also possible the wiring going to it is grounding out etc. Default is 45F tho.. Unplug your sensor and see what temp it reads.

Originally Posted by SDGTP99

You were right. I exchanged the new sensor for another. Everything works now. Hooray.

sadly we see way to much of this. glad to hear you got air again.......id have that car parked and drive one of my others. i need ac bad.

I went through this on my 99s. 37 degrees is where it stops turning on the compressor. I had replaced sensors a couple times and some just didn't last. They were GM but real cheap and bagged, not boxed. One time, while walking to the counter, the parts kid dropped it then picked it up and continued toward the counter with a "I know I just fugged up" look. When our eyes met, I was gently shaking my head no. He stopped, knowing he was busted. Tossed that one in a box under the counter and went back to get me another. Many years of service out of that one. The moral of that story is GP ambient temp sensors cannot take ANY rough handling. In collision repair, I found it cheap insurance to supplement for them if near an impact. Because in weeks following the fix, their A/C would quit but they rarely put two and two together about the reason the thermometer is wrong being related and you end up with a comeback on your record and a service department bill somebody has to pay.