So I replaced the ac compressor, condenser with integrated dryer also cleaned off the old inline filter. right now the compressor does not turn on when I started filling it up. the ac button just blinks 6 times. I put a vacuum on the system and it held a vacuum, which also holds the freon that is currently in it. this is for someone else and she just told me that a mechanic told her it might be an electrical issue. I checked the fuses and they are fine. what other electrical connectors or advice could you give me? I really appreciate it! also, let me know if you need more information.
Late reply but I actually found a wire that was cut somehow on the high-pressure side switch, went to the junkyard, cut off the connector, and spliced it onto the car. Worked just as it was supposed to. has been running perfectly since then. Thank you everyone for your input!
The AC is computer controlled, assuming you have the proper amount of refrigerant installed it could be a bad sensor or some other electrical problem. You'd probably need a dealer-level scan tool to do a diagnosis (Tech2 or equivalent). Some possible clues here:
https://chevroletforum.com/forum/impala-14/ac-light-blinking-multiple-times-97642/
So I think I have an issue with recharging it, the compressor won't come on while I'm charging it so it won't take freon like it is supposed to. it is just an open line pretty much, as I fill the low side the high side sits at the exact same pressure. I know when the system is fully charged and off, they equalize and it is usually at like 120 psi or something. right now they both sit at 80. Hope having a tech look at it isn't too expensive. thanks for the input.
If the system is in vacuum it should pull in enough from the refrigerant can so the compressor can turn on. (Usually all that's needed is about 20 psi to make the low-pressure cutoff happy, so it sounds like you have sufficient refrigerant for it to operate.)
The problem on modern cars is you have to deal with the electronics as well as the mechanical aspects of the HVAC system. Decades ago automotive AC systems had simple electrical switches controlling them. It was sufficient to have enough refrigerant and for the mechanical parts to be OK for things to work. Today HVAC is operated with a complex network of sensors and computer modules. It may not work even if the mechanical parts and refrigerant level are OK due to sensor and computer problems.
Blinking 6 times means the AC is not available at this time.
You may have an AAT (Ambient Air Temperature) sensor on that one.
Scroll through the menu and see what the Outside Air Temperature is displaying on your dash.
If it's showing below 40 your AC compressor won't engage.
If that's the problem, turn the AC on. Press and hold the AC button at the same time as you press and hold the Recirculate button. Hold for 5 to 8 seconds. If this is the cause of the issue, the AC will kick on and you will hear the compressor clutch engage.
Then replace the ATT sensor behind the front grill.
(It also will flash 6 times if the refrigerant is too low)
Thing is the temp shows what it is outside, was showing 85 and compressor not engaging, i see it also means that it is low on freon but the pressure is at about 85 on both sides i think that is plenty to get the compressor to start right? how else would you get enough freon without the compressor turning on and sending it to the high pressure side.
Late reply but I actually found a wire that was cut somehow on the high-pressure side switch, went to the junkyard, cut off the connector, and spliced it onto the car. Worked just as it was supposed to. has been running perfectly since then. Thank you everyone for your input!