A/c question

[paintslinga2010]

When i turn the a/c on the compressor will kick on for a couple seconds then stop, kick on a bit then stop. Ive heard something about a cycling switch but not sure where it is or what it does. When i hook the guage up while the car is running the pressure shoots up to full when the compressor kicks on but goes down when it kicks off. I need some help. Its hot as balls.

 

[modo]

When i turn the a/c on the compressor will kick on for a couple seconds then stop, kick on a bit then stop. Ive heard something about a cycling switch but not sure where it is or what it does. When i hook the guage up while the car is running the pressure shoots up to full when the compressor kicks on but goes down when it kicks off. I need some help. Its hot as balls.

sounds like the coolant is low

 

[paintslinga2010]

the guage says its overfilled when i hook it up. why would the compressor not stay on?

 

[CC'S95GT]

the guage says its overfilled when i hook it up. why would the compressor not stay on?

What does the guage say when the compressor is running? that's the reading you should be looking at.
It's cycling because your low on freon. and the system will only take freon when the comp is running.

 

[OnyxCobra]

the AC compressor is supposed to turn on and off, that's normal.

 

[NXcoupe]

Not if it's blowing hot air out it's not normal. They can cycle but it's usually not very frequent. You have a cheap do it yourself gauge, it's only going to show you a reading when the compressor is turning. If you have a cycling compressor, warm air coming out of your vents, you have low freon, put a can of 134 in and be done with it.

 

[AaRoN]

the AC compressor is supposed to turn on and off, that's normal.

What he's referring to, is not normal.

OP, you are either low on refrigerant or the cycling switch is bad.

 

[OnyxCobra]

hmmm i guess I never checked it when my a/c was blowing warm.

 

[paintslinga2010]

Finally got it to take 134 and all is well. Its hella nice having cold air but now i can watch my gas guage move. haha.

 

[NXcoupe]

Glad you got it fixed. Knew that's all it was. thing probably hardly cycles now at all huh?

 

[paintslinga2010]

I havent watched it but for maybe a minute after i filled it and the compressor ran steady. I was satisfied after that, so satisfied that i drove down the road with the hood not latched all the way. Thanks goodness it didnt blow up on me.
Thanks for the help NX!