1994 Ford Thunderbird heater blows cold after a few mins

Tiny
2CP-ARCHIVES
  • MEMBER
  • 1994 FORD THUNDERBIRD
  • 6 CYL
  • 2WD
  • AUTOMATIC
1994 Ford Thunderbird : My car blew a head gasket, just had a valve job, runs great until I turn on the heater which is the electronic climate control variety with digital temperature readout, etc. The heater blows hot air for a few minutes then turns cold. The engine temperature gauge which was in the normal range before turning on the heater begins to increase toward hot. The temperature gauge returns to normal when I turn off the heater. The valve job mechanic and other mechanic's are stumped, can you help?

Thursday, January 20th, 2011 AT 10:23 PM

1 Reply

Tiny
2CP-ARCHIVES
  • MEMBER
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Verify that the temperature gauge on the dash is accurate. Do this by putting a thermometer on the radiator. If this tests okay, check for air bubbles in the cooling system as you could possible have an air lock in the heater core or it is partially plugged.
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Thursday, January 20th, 2011 AT 10:25 PM

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