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1990 Ford F-150 heater core

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New User

Oct 11, 2008, 10:39 AM

Post #1 of 2 (6147 views)
  post locked   1990 Ford F-150 heater core  

How do I remove old heater core in a 1990 F-150 4x4?

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way2old profile image

Oct 11, 2008, 12:24 PM

Post #2 of 2 (6131 views)
  post locked   Re: 1990 Ford F-150 heater core  

This may help some.

  1. Allow engine to cool and release pressure from system, then disconnect heater hoses from heater core tubes, and plug hoses.
  2. Working in passenger compartment, remove glove compartment assembly.
  3. Remove seven screws attaching the heater core access cover to plenum chamber.
  4. Disconnect vacuum lines, then remove the cover with the vacuum harness attached.

Fig. 20 Disassembled view of heater case

  1. Remove heater core from vehicle.
  2. Reverse procedure to install.

Being way2old is why I need help from younger minds

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