The system and the load have become imbalanced. It will need to be looked at as the possible causes are many.
Any break or leak on the suction side of your pump can cause air in the lines.
The only true discharge line on a heat pump is located on the compressor. This line carries the high-pressure refrigerant gas that has been compressed by the compressor and is then directed towards the condenser. It's important to distinguish this from the suction line, which carries the low-pressure refrigerant back to the compressor. Proper identification of these lines is crucial for maintenance and troubleshooting.
oppisite side of txv sensing bulb on outlet of evaporator (suction line)
suction line liquid line
Some cases I've seen: -Nature: -lightning strikes near line -fires (I've seen farmers burn weeds out from under a line - the fire ionizes the air, and with the added particulates in the air create a path to ground) -snow storms/icing on lines (can cause lines to sag) -high winds (can cause lines to blow out, possibly making contact with trees, or can cause enough stress to break poles). Winds can also blow stuff into the lines -tornados -Animals: -Two bears climbing a pole -Two owls fighting near a line -Eagle/other large birds swooping down between conductors -Eagle/other large bird pooping on conductors -People: -farmers touching power lines with harvesting equipment -crop dusters attempting to fly under lines -people crashing cars into poles
It will be on the suction line (larger of the lines) between the compressor and the evaporator.
Dirty condenser coils. Blocked suction lines. Low refrigerant charge. Incorrect suction line size. Too much refrigerant. Electrical problems. Contaminants in the system. Insufficient oil lubricant.
AC discharge and suction lines are components of an air conditioning system. The discharge line carries high-pressure refrigerant gas from the compressor to the condenser, where it releases heat and condenses into a liquid. In contrast, the suction line transports low-pressure refrigerant gas from the evaporator back to the compressor, where it is compressed and cycled again. Proper insulation and maintenance of these lines are crucial for efficient system performance.
Any break or leak on the suction side of your pump can cause air in the lines.
The low pressure port is usually close to the compressor, on the larger of the two lines, and on the suction side of the compressor. The high pressure port is the smaller of the two and could be anywhere inside the engine compartment but usually along the firewall. The location of the hoses and ports depends on where the compressor is mounted in relation to the AC unit inside the car.
Have you checked your suction lines.
To change the AC compressor on a 2001 Lincoln Navigator, first, disconnect the battery and recover the refrigerant from the AC system using a recovery machine. Next, remove the serpentine belt and disconnect the electrical connectors from the compressor. Unbolt the compressor from its mounting bracket, remove the suction and discharge lines, then install the new compressor by reversing the steps. Finally, recharge the AC system with refrigerant and check for leaks.
Remove all A/C lines from the compressor which will cause you to lose you're R-12, release belt tensioner from the A/C compressor and remove the compressor from the engine bay and replace it with a new one. Installation is just reverse of removal
The only true discharge line on a heat pump is located on the compressor. This line carries the high-pressure refrigerant gas that has been compressed by the compressor and is then directed towards the condenser. It's important to distinguish this from the suction line, which carries the low-pressure refrigerant back to the compressor. Proper identification of these lines is crucial for maintenance and troubleshooting.
oppisite side of txv sensing bulb on outlet of evaporator (suction line)
Check the clutch and see if it needs replaced; more then likely the compressor came apart on the inside and you'll have to replace it, flush the lines, and replace the orfice.
There are two coolant lines that come from the compressor. One line goes to the condenser (radiator looking thing in front of the engine radiator). That line is the High side. From the radiator, that line goes through the firewall. The OTHER line that goes to the comressor is the LOW side, or some call it the suction side. Somewhere along that line you should be able to find a refrigerant test port. The low side will only be low when the compressor is running.