Lately I started getting an issue with my AC, sometimes it blows cold and sometimes warm, so today I went to the shop and they drained everything and filled with new stuff. And it is a little colder, but same problem, I put thermometer in and temp jumps from 65-73 and than back to 65... So the car doesnt have time to cool off, tired to drive sweaty in california, somebody help me, what is the problem... Compressor seems to work fine, changed it last year... Thank alot!

 

is the condenser fan cycling on/off?

 

Have they checked the expansion valve? It sounds like that may be the issue. I actually have that issue right now but too broke to fix it lol.

By the way, I noticed you are from Sacramento which had a high of 85 degrees today?? I wish I can switch spots with you this very moment. I am in the Phoenix area and last week we were reaching 118 degrees, no biggie...

Today was a nice cozy 105 with a little bit of humidity...

 

not to thread jack, but where is this expansion valve located?

 

It is inside the box with the evaporator core, which is in the passenger compartment under the dash behind the glove box.

How to remove the evaporator core box:


How to disassemble the evaporator box:

 

you the man. I need to do a complete overhaul and the FSM was useless. Thank You.