Question about 2006 Ford F 350 Super Duty
Is your moter working the fan that bring in the heat. check the hoses that they are not diconected
Posted on May 01, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
This is normally a vacuum issue. You need to check the vacuum lines coming into the truck. They are running along the firewall right under the cowell. These usually get a hole in them right in the middle and sometimes they get pulled off by accident. If you can not find a leak there, your switch may be bad. It is all vacuum operated.
Posted on Feb 06, 2012
Tips for a great answer:
Feb 24, 2017 | GMC Cars & Trucks
The mode and defrost actuators are connected to the mode and defrost doors by a cam type linkage system. Depending on the position of the door, air is directed through the HVAC module and distributed through various ducts leading to the outlets in the dash. If the HVAC control module detects a fault with the mode or defrost doors the HVAC control module will try to drive the actuator for a predetermined amount of time, to defrost, which is the defaulted position for the mode and defrost door actuators. When the mode switch is placed in the defrost or defog positions the A/C is commanded on and the recirculation door is moved to the outside air position to help reduce window fogging. A/C is available in all modes and recirculation is only available in the panel and bi-level modes.
Circuit Description The following DTCs are for the HVAC door actuators: ?€¢
B0248 is for the defrost actuator.
B0263 is for the mode actuator.
B0408 is for the left air temperature actuator.
B0418 is for the right air temperature actuator.
The HVAC control module controls the HVAC door actuators to regulate the airflow through the HVAC system. Each actuator consists of a stepper motor, a logic circuit, and a potentiometer. The potentiometer inside the door actuator allows the module to monitor the current position of the actuator drive shaft. The logic circuit inside the actuators receives control signals from the HVAC control module and controls the internal stepper motor. When a door positional change is required, the HVAC control module calculates a commanded door position. The module compares the commanded door position to the actual door position and determines the needed direction of motor rotation. The module applies a signal voltage to the door control circuit that is an input to the internal logic circuit of the door actuator. A 5 volt signal increases the door position. A 0 volt signal decreases the door position. When the commanded door position is equal to the actual door position, the HVAC control module sends a 2.5 volt signal to the door actuator and motor rotation stops. The ignition 3 voltage circuit provides source voltage to the logic circuit. The module provides ground to the actuator logic circuit through the low reference circuit. I would start by having the HVAC control module checked for DTC'S -diagnostic trouble codes First . Then check the system by using scan tool data . 1
Did you perform the HVAC Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - HVAC Systems - Manual
Go to Diagnostic Aids
Go to Step 3
Apr 02, 2016 | 2003 Chevrolet TrailBlazer
May 07, 2015 | Cars & Trucks
Oct 28, 2012 | 2002 Chevrolet S-10
Jul 21, 2012 | 1996 Chevrolet C3500
Dec 12, 2011 | 2001 Ford Taurus
May 20, 2011 | 1988 Ford Thunderbird
Dec 11, 2010 | 1991 Oldsmobile Cutlass Calais
Mar 30, 2009 | 2004 GMC Sierra 1500 Crew Cab
Dec 14, 2008 | 1999 Ford Windstar
61 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: