A/C not working

[Davis25]

Now for my second issue....... 97' Tahoe

My A/C doesn't work. When I push the AC button on the climate control panel, the LED doesn't come on and it doesnt blow cold air. The compressor does not turn either. I am wondering if it is because there is no power getting to the compressor or if the compressor itself is bad. Is there a certain direction to go in trouble shooting this? What would you recommend? I have checked the fuses and they all are good. Thanks again!

 

[Jaycenk]

some times those ac switches go bad. check it with a meter and see if the switch is good.

 

[Davis25]

Sorry for my ignorance, but how exactly would I test the button with a volt meter? I have noticed that my fan works however it always comes out the dash vents even when the defrost is on alone.

 

[Jaycenk]

Check for continuity. in the on positionit will have it and off it wont. Plenty of how to's on how to use a meter online. each is different. Have you check to see if the system even has freon in it? There is a pressure switch that wont allow the compressor to turn on if there is no freon in it. Most places will do free inspections, or you can get a cheap guage or have someone check it for next to nothing. The other sounds like the vacum controlled valve is either stuck, the door is stuck or a vacum leak.

 

[Davis25]

Check for continuity. in the on positionit will have it and off it wont. Plenty of how to's on how to use a meter online. each is different. Have you check to see if the system even has freon in it? There is a pressure switch that wont allow the compressor to turn on if there is no freon in it. Most places will do free inspections, or you can get a cheap guage or have someone check it for next to nothing. The other sounds like the vacum controlled valve is either stuck, the door is stuck or a vacum leak.

Thanks so much for the info! I will let you know how it comes out.

 

[shortntall]

fuse?