Where is AC orifice tube located?

One of the many parts that can fail within your vehicle’s air conditioning, is the orifice tube. This tube is also known as the expansion tube, and is located within the tube between the condenser and the evaporator. It has 1 side that is a little smaller than the other, to supply more pressure.

Is the orifice tube on the high or low side?

An orifice tube is used to control the flow of refrigerant into the evaporator. It works in conjunction with compressor controls to maintain low side pressure at a sufficient level, to prevent evaporator icing or flooding. The orifice tube is placed in the high side liquid refrigerant line, at or near the evaporator.

Where is the orifice tube on a 2002 Ford Explorer?

the orifice tube is located on the passenger side of the engine compartment.

Can an orifice tube get clogged?

The orifice tube can become restricted and clogged with debris. A clogged orifice tube is typically caused by compressor failure. When this happens, little pieces of metal and aluminum shrapnel will be found in the tube’s screen filter.

How do I know if my orifice tube is bad?

Symptoms of a Bad or Failing Expansion Valve (Orifice Tube)

AC system performing worse than usual and blowing warm air. One of the first symptoms of a problem with the AC expansion valve or orifice tube is an underperforming AC system.
Frost on AC evaporator or coming from the vents.
AC compressor constantly running.

How do I know if my AC orifice tube is clogged?

Where is the orifice tube located on a 2003 Ford Explorer?

Orifice tube is in the smaller line that runs from front to back on the right side just above the shock. There should be a connector over the line.

Where is the orifice tube on a 2005 Ford Explorer?

The “orifice tube” is located in the “condenser to the evaporator’ line. The orifice tube will change the high pressure liquid refrigerant into a low pressure liquid refrigerant.

What are the signs of a clogged orifice tube?

Symptoms of a Bad or Failing Expansion Valve (Orifice Tube)

AC system performing worse than usual and blowing warm air. One of the first symptoms of a problem with the AC expansion valve or orifice tube is an underperforming AC system.
Frost on AC evaporator or coming from the vents.
AC compressor constantly running.

Where is the orifice tube located in an auto?

The orifice tube may be located: In the inlet tube to the evaporator. Built into the high pressure liquid line. Inserted into the high pressure line near the condenser. The 5 different types of Auto AC orifice and expansion valves.

What causes an orifice tube to fail in an AC system?

Most orifice tubes fail due to contamination in the AC system due to sealer, oil degradation or mechanical deterioration. Replacing a plugged orifice tube without solving the root problem will result in another plugged orifice tube.

How do you remove the orifice tube in an evaporator?

Remove the orifice tube using needle nose pliers or removal tool. Note the orientation of the orifice tube. It must go back in the same way. Lubricate the O-rings on the new orifice tube with AC oil. Insert the new orifice tube into the evaporator or LLOT or SLOT.

Where is the orifice tube located in an air conditioning system?

If your system uses an orifice tube instead of an expansion valve, most of the procedures are nearly the same, the difference is that the orifice tube is located Inside the line going to the evaporator. Step 1: Locate the orifice tube.

How do you put a new orifice tube in an evaporator?

Smear some refrigerant oil on the o rings and insert the new orifice tube into the line. Observe the direction, it’s easy to put it in backwards. The new orifice tube should have an arrow on it that should go in pointing toward the evaporator.

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