I am getting in heat... We know it now the heating core... Do you have any idea what it is

Is both heater hoses hot? Could need radiator and heater core flush. Water pump propellers could be detoriated. I have seen this on vehicles before. Just some ideas to look at.

Hi, this symptom indicates restricted flow through the heater core. Recommend you try back flushing the core by removing the heater hoses from the heater core (in the engine compartment) and hooking a garden hose to the lower port using a splice. If the core will not back-flush, replace the core. Please let me know if you have any questions, and thanks for using FixYa.

try flushing cooling system could be a blocked heater core.if flushing doesnt work remove and replace heatercore.

First thing to do is check the antifreeze level in the radiator. An empty radiator won't always show a hot temperature gauge or make heat in the cab. If it's full, then the problem is probably your heater core. Judging by the year of your truck, thats where my money's at.

I'm having the same problem, no heat at idle. I replaced the waterpump/both thermostats/belt and radiator. I'm still having the same problem. any ideas?

Thanks,

Kurt

the a-c and heater run on 2 different systems the heater needs coolant going thru the heater core to make heat by blowing air through it and the a-c uses it's own sealed system to cool the air so if you have no heat / it has nothing to do with the a-c working or not . first thing you do is check the cooling system like rad and coolant levels . you will have heater core hoses running from the engine to the firewall going to the heatercore . grab the heater core hose and feel if it's hot . if your hoses are hot then the heater core is bad or the blending doors are stuck .

Good place to start is a cooling system flush and thermostat replaced.

the problem is probably the heater core, it can become clogged with dribris. this stops heat from the engine getting to it and then no heat.

try replacing the heating core mine is the same way and that is what's wrong with it

Hey jacob, there are a number of things that can be wrong, let's start w/ easy cheap ones...1st, the easiest one is low coolant. If the level is low, it won't circulate thru the heater core, so no heat. 2nd thermostat stuck open. If this happens, the engine won't reach peak operating temp, and again, no heat. Pretty easy to check, is your car running cold (or low normal range?) If the temp gauge shows it's warming up in 5 - 10 minutes of driving, and is in normal range, then it probably isn't the thermostat. 3rd dash control that you use to select heat setting is either vacuum controlled (no vacuum @ switch possibly) or thermostatically controlled (faulty control), both of these could result in no flow of coolant to heater core, 4th a plugged up heater core (rust and corrosion) preventing coolant from flowing thru heater core. Let me know how u make out.