When an AC system has low side pressure but no high side pressure, it typically indicates a blockage or restriction in the system, potentially in the expansion valve or the condenser. This issue can prevent refrigerant from circulating properly, leading to inadequate cooling. Alternatively, it may suggest a refrigerant leak, causing the system to lose its ability to maintain pressure in the high side. It's crucial to diagnose and address the problem to avoid further damage to the AC system.
High side and low side refer to the pressure in the ac system. Ie The high side is the high pressure line and low side is the low pressure line.
You are on the wrong port. Some fords have an extra port that the low side hose screws on but is a high side fitting. look for another port.
Low side.
When you say too high, just how high is it and what is the high side pressure. It is not uncommon for the suction pressure(lowside) to get up to 80psi on a very hot day. You cannot determine what is wrong unless more information is provided. It could be that your system is overcharged, but without the high side pressure and the temp of the suction line it is hard to give the right answer.
Add refrigerant vapor on the low side of the system ,the compressor raises the pressure of the refrigerant on the high side of the system and lowers the pressure on the low side
Add refrigerant vapor on the low side of the system ,the compressor raises the pressure of the refrigerant on the high side of the system and lowers the pressure on the low side
The compressor changes the low pressure gas into a high pressure gas which then has the heat of compression removed in the condensor to turn it into a high pressure liquid.
The condenser is on the high pressure (discharge) side of the system.
The condenser does not have a low pressure side, because the condenser is not on the low pressure side of the system - it is on the high pressure side, and refrigerant going into the system is at high pressure throughout the whole of the condenser. The high pressure side of an AC system begins at the compressor outlet and ends at the metering device inlet (refrigerant leaves the compressor outlet and goes directly into the condenser inlet). The low pressure side runs from the metering device outlet to the compressor inlet.
it is the low pressure side
The most basic thing is that is circulates refrigerant through the system. It also separates the low pressure side from the high pressure side of the system.
You'll see two lines coming in and out of the compressor. One will be larger than the other. The compressor splits the low pressure side from the high pressure side. The smaller line will be at the compressor outlet, and that's where the high side of the system begins. From the compressor, the line will go to the condenser. Where the line goes next depends on what type of system you have. If you have a Thermal Expansion Valve (TXV) system, it will go to the receiver-drier. If you have a Fixed Orifice Tube (FOT) system, it will go directly to the FOT from the condenser outlet. On a TXV system, the line will go from the receiver-drier outlet to the TXV inlet. The TXV and FOT are both metering devices which separate the high and low pressure side of the system. The high pressure side ends at the metering device inlet, and the low pressure side begins at the metering device outlet.