heater is not getting hot
How do I replace the block heater in my 1998 F150 4.6L?
Inline in one heater hose underhood near the HVAC box (right hand side underhood.)
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.
look right above the battery and you will find a TEE valve on a little black hose. mine has a blue valve on the tee pull it off and slide the other in
heater core hoses not hot
If you are referring to the air door that controls air flow through the heater core, it is on a vertical axis and the actuator motor is on the bottom of the box and is accessible from the drivers side footwell. Check heatertreater.net for pictures and diagnostic information.
On the throttle body
There isn't one. Only on a 2004.
where is the pcv valve on a 1992 f150 with 5.0 liter
You have a fuel flow problem. Could be an injector, could be the automatic choke or the idler control valve, usually located on the manifold.
you should be able to get at heater core just by removing glove box.no need to remove all the dash Is there any instructions on how to do this?
Idle Air Control Overspeed Error