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Re: location of the heater control valve
There are 2 hoses going through the firewall from the engine, these are the coolant hoses to the heater core, one is 3/4" and one 5/8", the control valve should be in the larger line (3/4") which is the inlet, make sure that the valve has vacuum (heater on low), also check and see if both hoses get hot with the heater blower on low, if they do get hot your problem is not the heater control valve but the air temp control blend door actuator.
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Probable cause that the blower motor continues is that the power supply is constant. The only time that the blower motor is off is when you actually turn the heater/Air conditioner switch off. The blower remains on all the time if you are only using the fan controller as this only controls blower speed.
Check to make sure that the controller is working properly. Is this a 2009 Lariat? or a 1997 F150? I have a controller for the 1997,
I would take a closer look at the heater control valve located in line with heater core hose.it vacuum controlled to close coolant flow to heater core when a/c Is on.it's located by the radiator on passengers side.it has a black plastic lever on it, and the body it aluminum. The lever breaks internally, causing low coolant flow to heater core.remove and you will find white sludge build up. Replace and be on your way....
In the 2000 Ford F150, you'll find the heater control valve by looking right above the battery. You'll find a little black hose leading to it. --------------------------------------------------------------------------------- Renault CAN Clip
the ticking could be a number of things, but with the oil problem you describe I would check the rocker assembly , either you or your mechanic needs to do a compression check on all cylinders , if you find one or 2 lower than the others, especially in a row,, ( next to each other) you could have valve , valve stem, or pushrod problems, Don't panic ,, thats not as serious as it sounds, the compression check will tell you the story ,
If it has a heater control valve you can easily locate it. You will find it on one of the two hoses going to the heater core. Check to be sure it is opening. Also check to be sure you heater core is not plugged.
There is no heater valve on a 1998 ford F-150. The hoses for the heater lead directly from the engine and go to the heater case. PS The heater doors are all vacuum controlled so you might wanna look under the dash for any lines that might be disconnected