How should a heater core leak be tested and what is the removal procedure on 2003 Ford Crown Victoria?

When a leak seeps in your heater core, first, do a leak test before dismounting the core out of the car. The plenum chamber, screws and the heater core cover can be removed at the beginning. With a scalpel, cut the seal above the inlet and outlet tubes and remove the heater core. The installation is as follows in reverse.

OEM 2003 Ford Crown Victoria Heater Core

HVAC Heater Core

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2003 Ford Crown Victoria Heater Core Part Number: H2MZ-18476-J
Product Specifications
- Other Name: Heater Assembly - Less Radiator; HVAC Heater Core; Core
- Replaces: HC-31
- Condition: New
- Fitment Type: Direct Replacement
- SKU: H2MZ-18476-J
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2003 Ford Crown Victoria Submodels:
- Base, LWB, LX, LX Sport, Police Interceptor, S, Special Edition, Touring Sedan | 8 Cyl 4.6 L CNG, 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS

2003 Ford Crown Victoria Heater Core

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2003 Ford Crown Victoria Heater Core Parts Q&A

Q: How should a heater core leak be tested and what is the removal procedure on 2003 Ford Crown Victoria?
A: When a leak seeps in your heater core, first, do a leak test before dismounting the core out of the car. The plenum chamber, screws and the heater core cover can be removed at the beginning. With a scalpel, cut the seal above the inlet and outlet tubes and remove the heater core. The installation is as follows in reverse.