Idk know but mine does it when i start off from a red light or stop sign and as soon as i let off the gas or it changes gears (automatic) it comes through the vents like normal.
How do I replace the block heater in my 1998 F150 4.6L?
You probably have a leaking heater core.
where is the tps located on a 1994 f150
Copper Tubing works very well with rubber connections just @ the motor & heater core.
F150 u mean I`m sorry, yes F150
How do I locate the heater blend door actuator in a Ford f150 pickup
I wouldn't recommend it. Odds are that you'll lose coolant liquid through the heater core, which eventually can lead to the car running dry and overheating.
There really isn't a heater control valve. The coolant flows through the heater core at max pressure and temperature is controlled by controlling the amount of air flowing through the heater core. This is the function of the blend door and this is a fairly common failure on Ford trucks. Check heatertreater.net for diagnostic information and suggestions on how to repair the system.
There are several common heater problems for a 1997 f150. A stopped up or leaking heater core, bad thermostat or clogged up blower fan housing all can cause heat problems.
5x5.5
heater core hoses not hot
Go to hospital take he/she to the hosipitstal