Dodge Dakota Problem Report
Dodge Dakota HVAC Air Flow Switching to Defrost When Accelerating
The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops. There is also a revised vacuum check valve available to address this concern.
During acceleration, the HVAC switches from max cool to defroster mode. Not found source of problem. - cutiger75
No solution yet. Switches to defrost vents under acceleration. Suspected vacuum issue. - Visitor
Same here,no vaccuum leaks and all the check valves under the hood check fine. - Visitor
air flow switches from bilevel to defrost when accelerating - Visitor
Air flow in vehicle keeps cycling and flips some sort of gate in the heater duct system.....plus in driving gear timing seems horrible...In park or nuetral it sounds decent but still using an incredible amount of gas. - Visitor
I have a 2002 Dodge Dakota. When I turn left to any degree, at moderate speeds, I get a "rumbl...
are there parts I can purchase
My heater is stuck on defrost...when I change it to feet or vent option it still only blows on...
it did not work then I put a new thermostat still poor to no heat what am I over looking