Posts Tagged: Ford truck defrost only

Ford truck only blows out defrost vent

May 14, 2020

Ford truck only blows out defrost vent — fix If you own any of the Ford trucks listed below with the 7.3L or 6.0L diesel engine and find the air only blows out the defrost vents and you can’t get the HVAC system to move to any other position, this is the fix you’re looking for. Ford technical service bulletin 05-17-4 Ford has issued a service bulletin 05-17-4 to address a Ford truck only blows out defrost vent on the vehicles listed below. Diesel engines don’t produce manifold vacuum because … Read More