A/C

1998 Dodge Ram

Tiny

footmeister1

June, 25, 2013 AT 9:48 AM

When you turn the ac knob on, the ac works but you cannot change the air flow from the defrost position to make the air comes out the vents. The knob will turn but the air flow is not redirected.
what needs to be checked and if it is a vaccum problem how would you know/

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Tiny

Docfixit

June, 25, 2013 AT 10:03 AM

Vacuum does control Mode either switch is faulty or Vacuum source from engine intake was lost. Black plastic line from intake through bulkhead to switch

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