Need help with AC fix.

Any codes in the climate unit. Under fault diagnostics

 

None.. is it possible to have more then a little enough to trigger the low side, but, not enough to create pressure to trigger the hi side??

Hmmm... Things that make you go hmmmm..

 

This will sound stupid but volvo changed the ac compressor a few years ago. The new ones have the same plug as the old ones BUT you must plug in a adapter resistor then plug it into the truck. For it to work.

 

post a picture of what kind of compressor you have if it's the new type of compressor they have been going to you need jumper harness or switch the wires in the connector for it to work. did you by any chance have compressor replaced if not check to see that you have power and ground at the copressor and then go fromt there if no power make sure everything is working properly with climate control maybe need to replace it.

 

Can you post a pic of what you are talking about. This is a new one.

 

There is a lot of different controls for it depends on what you have

 

hmm. that doesn't sound right. Sounds like a programming issue.

Arizona anyone?? 115 today and my AC doesn't work. Whewww..

 

Dear God!!!

 

Soo. 108 today. If the Low pressure sensor on the truck stuck meaning it's reading that here is pressure in the system, won't this allow the a/c compressor to always stay on??? Also, since there isn't any pressure in the system, the Hi pressure sensor will not activate to shut the compressor off. Does this sound right?? Need to find the leak, install new low pressure sensor, leak test /recharge..