Re: I need some help. And heat!
Stupid, I know, but have you made sure you're properly topped off?
If the engine is thoroughly warm, try running the engine up to about 1800-2000 RPMs for about a minute. While doing this, have your heater on high. If you get heat this way then you most likely have a head gasket issue, and should do a cooling system pressure test. If you get no heat, quickly go out to the engine compartment and check both heater hoses, like he said. If they are both hot, there is a problem with the blend door inside. If only one is hot then the heater core is clogged....but I've never seen that. However, if you don't have heat when revving, and both hoses are cold, then you aren't getting any flow and likely have a pump issue.
2004 Excursion 6.0
New HPOP/HPO system o-rings; Updated standpipes and dummy plugs
EGR delete; Rebuilt oil cooler; CCV collection mod
VR Black Diamond head gaskets and ARP studs
Oil and coolant bypass filters; Shell EC-1 coolant
Rebuilt turbo; 250 amp alt; 6000 watts of brain scrambling
One giant 240 pound English Mastiff riding shotgun!