gooffeyguy
Tom
Bad blend door actuator?
Sent from my SM-G930V using Tapatalk
Sent from my SM-G930V using Tapatalk
Why won't air conditioning turn on ? ? ?
- Thread starter Johnniev57
- Start date
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swathdiver
Full Access Member
John, you need the right tools to diagnose and fix this properly. Adding cans can overfill the system and ruin it. The system has pressure switches and if bad, will not turn the compressor on. If the head unit is bad, there will be internal trouble codes stored for a technician to see. Who do you know with a Tech-2 or other bi-directional scan tool?
he will just blow out the pressure release tab if it was over full(newer A/C have them so the compresses does not "explode" ) he claimed the line was cold so the actuator is probably bad..
i wonder if he tried the manual reset by pressing the ICE and recirculate button.
DenaliReyes
Full Access Member
Manual Reset?
I have the same problem. My ac pump turns on but stops, then turns on and stops. Alsmot as if it knows not to stay on. The line is coldAF going into the firewall, but hot after the orifice tube? Is that what it's called? I am goi g to check the actuator. Manually turn the blend door and see if that's the case. Save me some cash for now.
swathdiver
Full Access Member
Seems to me the pressure is not right and that is telling the computer to turn off the compressor (pump).
Hi... sorry to hi-jack your thread, but I'm having an issue with my AC on an '09 Yukon XL SLT... I push the ice button and it blinks 3 times and the AC does not come on.
The air blows, but not cold. I tried a couple of things already.
1. Replaced the sensor on the compressor (but it didn't come with an o-ring so I left the old one on.)
2. Tried the manual reset by pressing the ICE and recirculate button (but I didn't know how long to hold them in so I held them for 10 seconds.)
3. Undid the power supply from the battery. Waited 10 minutes, discharged the line by touching to ground. Restarted car, ran for 5 minutes and turned on air. No luck.
Question -
Will the AC light blink 3 times if it is simply low on freon? If so, I'll try adding some.
I've already resigned myself to taking it into the shop, but wondered if there were any other 'common' things to try on my own before hand.
Any advice is greatly appreciated.
The air blows, but not cold. I tried a couple of things already.
1. Replaced the sensor on the compressor (but it didn't come with an o-ring so I left the old one on.)
2. Tried the manual reset by pressing the ICE and recirculate button (but I didn't know how long to hold them in so I held them for 10 seconds.)
3. Undid the power supply from the battery. Waited 10 minutes, discharged the line by touching to ground. Restarted car, ran for 5 minutes and turned on air. No luck.
Question -
Will the AC light blink 3 times if it is simply low on freon? If so, I'll try adding some.
I've already resigned myself to taking it into the shop, but wondered if there were any other 'common' things to try on my own before hand.
Any advice is greatly appreciated.
Basics first. Need to know the pressures in the system and if compressor is cycling.
An Update: I had a little freon in a can and added it to the system. The compressor then started, and the AC (ice) button no longer blinked and was a solid light again.
So, bottom line, if your freon gets low it can cause the 'ice' button to blink 3 times.
Maybe that information was readily available in the owner's manual.... I don't know. I usually do my looking on the internet.
I never could find anything that said if your freon level is too low it will cause the 'ice' button to blink 3 times and the AC won't turn on.
Hopefully this will help someone in the future with a similar problem.
So, bottom line, if your freon gets low it can cause the 'ice' button to blink 3 times.
Maybe that information was readily available in the owner's manual.... I don't know. I usually do my looking on the internet.
I never could find anything that said if your freon level is too low it will cause the 'ice' button to blink 3 times and the AC won't turn on.
Hopefully this will help someone in the future with a similar problem.
That is wht I was saying we need to know the pressures.
The owner's manual is vehicle specific. I would learn to start there for flashing lights or check engine lights meanings.
The owner's manual is vehicle specific. I would learn to start there for flashing lights or check engine lights meanings.
Anytime the AC system won’t start it blinks 3 times and turns off. If you have the controls set to defrost, if the outside air is too cold, if it’s low on Freon, etc.
