OEM Ford Escort Heater Core

Ford Escort Heater Core Parts and Q&A

• Heater Core
  F1CZ-18476-A
  Q: How to properly backflush the heater core to prevent clogging and ensure optimal coolant flow on Ford Escort?

  A:

  Separating heater core backflushing from engine cooling system cleaning is critical because it protects tubes from getting clogged while performing this operation when the system is empty. First detach the outlet heater hose from the water pump while adding a female garden hose adapter and fasten it in place using a clamp. The outlet heater hose with one female hose end should connect to a male garden hose end for water supply. Drain the water through the heater core inlet heater hose after disconnecting it from the cylinder block fitting into an appropriate receptacle. Open any water valve present in the inlet heater hose because vacuum should not be applied. Proceed to operate the water supply valve a few times to produce a surge which dislodges stuck material in heater core tubes so water pressure reaches its full strength for a period of five minutes. Check the water valve vacuum motor function with vacuum application then examine the valve for leaks before replacing it. The hose clamp and female garden hose-end adapter from the outlet heater hose should be removed for reconnecting the water pump fitting and attaching the inlet heater hose to the cylinder block fitting. You need to complete the engine cooling system by mixing 50/50 volumes of Ford Motorcraft Premium Engine Coolant VC-4-A (CXC-10 in Canada, VC-5 in Oregon) or equivalent additives that match Ford specification ESE-M97B44-A with water before testing the heater performance under set engine cooling parameters.
• Heater Core
  F8CZ-18476-AA
  Q: How to service and repair the heater core on Ford Escort?

  A:

  Engine coolant drainage comes first before starting service or repair of the heater core. A leak test should be performed first to verify a heater core leak before heater core removal. Detach both heater water hoses from the heater core prior to removing the instrument panel. Detach the antenna lead from the heater core housing before disconnecting the vacuum control motor vacuum connector. You need to disconnect the vacuum lines from the A/C evaporator housing retainer before removing the windshield defroster nozzle connectors using pin-type retainers and screws. The first step involves untightening the retention screw of the A/C evaporator outlet duct while you remove the lower heater core housing retaining nut followed by upper retaining nuts to extract the heater core housing. Start by taking out the heater dash panel seal after which remove and unscrew the heater core cover. The heater core now allows itself to be removed. You should execute the inverse of the removal process to install the components.