MY 1990 F150 ONLY BLOWS COLD AIR FROM THE ...

1990 Ford F-150

Tiny

cculbe01

February, 17, 2013 AT 4:01 PM

My 1990 f-150 only blows cold air from the defrost regardless of the position of the selector switch on the dash. Checked heater core, seems alright, along with a few vaccum lines.

FOUND 6257 RELATED QUESTIONS

No Heat

37 ANSWERS
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1 Answer

Tiny

ASEMaster6371

February, 17, 2013 AT 4:04 PM

There is a main vacuum feed from under the hood to the inside. Check to see if the hose is broken or disconnected. Defrost is the de fault position for the air directions with no vacuum

Roy

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