What is the purpose and how to replace a plugged fixed orifice tube in an air conditioning system on Ford Crown Victoria?

Restriction of the flow of liquid refrigerant into the evaporator core is done by the fixed orifice tube assembly. The evaporator temperature is controlled by a pressure-operated electric switch. In cases where high pressure is extremely high and the low pressure is nearly a vacuum, then the fixed orifice tube is blocked and it needs to be replaced. To take it out, disconnect the liquid line connection, lubricate the O-rings, use a special tool to extract the tube, and cap an open line.

Genuine Ford Crown Victoria A/C Orifice Tube

A/C Hose

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3 A/C Orifice Tubes found

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Ford Crown Victoria Restrictor
Part Number: F5DZ-19D990-AB
$4.89 MSRP: $7.60
You Save: $2.71 (36%)
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Product Specifications
- Other Name: Orifice, Orifice Tube, Refrigerant Hose Connector
- Replaces: F5DZ-19D990-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1993-2011 Ford Crown Victoria | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, 4AT, 4AT 4R70W, 4AT 4R75W, 4AT AOD-E, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Crown Victoria Seal - Special
Part Number: F5XZ-19D990-AA
$14.02 MSRP: $22.36
You Save: $8.34 (38%)
Ships in 1 Business Day
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Product Specifications
- Replaced by: F5XZ-19D990-AB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992-1995 Ford Crown Victoria | 8 Cyl 4.6L | 4AT AOD, 4AT AOD-E
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Ford Crown Victoria Air Conditioner
Part Number: F5DZ-19D990-AA
$4.89 MSRP: $7.60
You Save: $2.71 (36%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Manufacturer Note: Orifice - A/C, w/ Orange inlet frame color, Orifice I.D. = 0.0560" to 0.0590"
- Replaced by: F5DZ-19D990-AB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1993-1994 Ford Crown Victoria | 8 Cyl 4.6L | 4AT AOD-E

Ford Crown Victoria A/C Orifice Tube Parts Questions & Experts Answers

Restrictor
F5DZ-19D990-AB
Q: What is the purpose and how to replace a plugged fixed orifice tube in an air conditioning system on Ford Crown Victoria?
A: Restriction of the flow of liquid refrigerant into the evaporator core is done by the fixed orifice tube assembly. The evaporator temperature is controlled by a pressure-operated electric switch. In cases where high pressure is extremely high and the low pressure is nearly a vacuum, then the fixed orifice tube is blocked and it needs to be replaced. To take it out, disconnect the liquid line connection, lubricate the O-rings, use a special tool to extract the tube, and cap an open line.