air conditioner 1994f150 pickup
10

Asked by Craggy May 10, 2015 at 08:45 PM about the 1994 Ford F-150 XLT 4WD LB

Question type: Maintenance & Repair

with air conditioner on and fan operating  when motor put under acceleration pressure  air shifts from dash vents to defrost port at windshield  then when tops a hill and power pressure demand drops the  air returns to the  dash vents .  have replaced valve in dash  would there  be a vacuum  failure causing this  ??

1 Answer
10

Craggy answered 9 years ago

I have replaced check valve in vacuum line 2 times (thought first one was bad valve when it didn't fix issue) ... next step would be what ??

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