Current Problem with HVAC
I was force feeding my AC with freon then freon came out from the front of the car. I don't know exactly where. I stopped force feeding the system. I now have freon in the system so I now replaced the relay. My AC unit now comes on but it will not stay on. It constantly cycles on and off. Did I blow something or does the system have a high pressure Relief Valve?
I had a low pressure recharge tube that had a gauge on it. White, green, yellow and red.
My first time force feeding my AC compressor. I emptied one small can and then started on another. I noticed the pressure going into the red so I stopped feeding and was just monitoring. As I was monitoring something went Awry. Do you know if I blew something or was it the Pressure Relief Valve?
Could someone tell me where the Relay and Fuse are located for the AC Compressor?
2002 Chevrolet Malibu
If your AC compressor will not engage check the state of charge, your low pressure cutout switch may be stopping it. Typically those will disable the compressor when pressure gets down to 20-30 psi to avoid damage. Refrigerant carries the lubricating oil, so running the compressor with insufficient refrigerant can destroy it. Low refrigerant is pretty likely on a 20-year-old car.
Yes, most if not all compressors have a high pressure relief valve. Usually that will blow at something like 400 psi if a hose or joint doesn't blow first. It's always possible something was damaged by overpressure. Force feeding refrigerant without keeping track of the amount and without monitoring system pressures is a very, very bad idea.
I don't know what you mean by "pressure going into the red". If you were monitoring system pressures what psi were you seeing on the high and low sides? The pressure relief valve blowing indicates a serious overcharge condition, that is most likely what you experienced. The only other way a refrigerant discharge would have occurred is if a hose or some other component ruptured due to the high pressure. However you say the compressor does run somewhat so there is some refrigerant in the system. What are your current high and low side pressures? Is the low side going too deep into suction and triggering the low-pressure cutoff switch?
the fuse box under the hood
