How do you replace the orifice tube in a car?

Replacing the orifice tube requires you to completely evacuate the AC system and disconnect the high pressure liquid line. It’s not a fun job. • Replacement orifice of the exact same color and part number as the old unit Buy or rent a refrigerant recovery machine. Attach the manifold gauge set to the high and low side ports on your car’s AC system

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 Ricks free auto?

Lubricate the O-rings on the new orifice tube with AC oil. Insert the new orifice tube into the evaporator or LLOT or SLOT. Reconnect the liquid line to the evaporator or condenser and follow factory specs for tightening (if required).

What happens if you overcharge the orifice tube?

Overcharging by as little as 2-oz can dramatically reduce the performance of your car’s AC system. MORE is NOT better! Most orifice tubes fail due to contamination in the AC system due to sealer, oil degradation or mechanical deterioration.

You will see the orifice tube within the line. Use some pliers, and gently pry the tube out of the line. You may need to twist in back and forth, in order to work it free. Make sure that you do this carefully, so it does not break off within the tube. Once the old orifice tube is removed from the liquid line, you can install the new one.

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.

Where is the seal on the orifice tube?

Located within the line, you will find a small rubber seal. This must be removed before you can take out the orifice tube. It is located on the end of the liquid line coupling, and can be removed with a screwdriver or a pair of needle nose pliers.

What is a fixed orifice?

A fixed orifice tube is really a compromise between highway performance, stop and go, and idle performance. This is because at idle, the condenser has less air flow across its surface. This causes head pressures to increase, but also causes vaporized refrigerant leaving the condenser to enter the orifice tube.

Where is the orifice tube on a water line?

It is located on the end of the liquid line coupling, and can be removed with a screwdriver or a pair of needle nose pliers. You will see the orifice tube within the line. Use some pliers, and gently pry the tube out of the line. You may need to twist in back and forth, in order to work it free.

Where is the orifice tube in an AC system?

It is usually installed at the evaporator inlet and works together with the orifice tube to regulate the flow of refrigerant through the vehicle’s AC system. Too much refrigerant flow and the evaporator core will freeze over; too little and the evaporator core will overheat and compromise the efficiency of the AC system.

Where is the orifice tube in an evaporator?

When the orifice tube is built into the line, it’s referred to as a Liquid Line Orifice Tube (LLOT) or a Suction and Liquid Line with Orifice Tube (SLOT). The orifice tube may be located: In the inlet tube to the evaporator. Built into the high pressure liquid line.

Where to look for an orfice tube change?

You can usually spot where the orifice is by looking for the slightly enlarged diameter of the line near the connection of the 2 lines. You’re probably fine on oil. Most of it stays in compressor and lower points in the system.

Do you need to replace orifice tube, now problem?

Your compressor is going. You not only need to replace the orifice tube, but the compressor, condenser, accumulator and flush all the lines. If you don’t, the problem will just return and if you only replace the compressor, the shavings will make their way back to the new compressor and take it out.

When to flush a clogged orifice tube?

When the cause has been found, a system flush will be required, and the component must be replaced or the excess debris will re-clog and damage the new orifice tube. Both the clogged orifice tube and the accumulator must be replaced when debris is found in the system.

Where is the orifice tube on my GMC?

The orifice tube is “in-line”. Not sure on 2007, but on my 2002, passenger fender where line breaks apart. (2 lines connected together with “nuts”). You can usually spot where the orifice is by looking for the slightly enlarged diameter of the line near the connection of the 2 lines.

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.

What kind of engine does a Pontiac Firebird have?

Base models got a V-6, while Formula and Trans Am models got the 5.7-liter LT1 V-8 similar to the one introduced in the 1992 Corvette, albeit with more restrictive intake and exhaust. This was coupled to a standard Borg Warner 6-speed manual, although a 4-speed automatic was a popular option.

How much is a 1995 Pontiac Firebird worth?

**Figure based on a stock 1995 Pontiac Firebird valued at $3,900 with OH rates with $100/300K liability/UM/UIM limits. Actual costs vary depending on the coverage selected, vehicle condition, state and other factors.

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