Ford: heater on 1999 f150 p/u, heater hoses, side firewall

Question
QUESTION: My heater wont get hot inside my 1999 F150 p/u, can you help with this?

ANSWER: some things to test first. ck the hoses on the out side firewall of your truck.with caution feel the hoses  after the truck been running .to see if they feel hot or just warm an also feel if one is hotter then the other let me know and will take it from there.

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QUESTION: i checked the hoses, they were just warm.i took one hose off and blew air threw it.that didnt help

Answer
make sure that the radiator is full of coolant not this will cause a vehicle to have no heat. with the vehicle running ck to see if the thermostat is working the easy way to do this is feel the upper and lower hose after running for a while to see if they feel the same if not you may have a bad thermostat or a clog radiator.you can also remove 1 of the heater hoses and have someone start it and look at the hose and make sure the water flow is good if nothing comes out then you have water-pump problems. let me know