Heater not working?

This is typical when the temperature blend door actuator goes out here is a guide to help walk you through the steps of changing it with instructions in the diagrams below for your car.

https://www.2carpros.com/articles/replace-blend-door-motor

Check out the diagrams (Below). Please let us know what happens.

Check out the second diagrams it show boh signal and dual zone applications.

You are welcome use 2Carpros. Com anytime

Are both heater core hoses getting hot? It almost sounds like you have an air pocket problem not allowing coolant to circulate. Lets go over this guide to help find the problem

https://www.2carpros.com/articles/car-heater-not-working

Joe

Your gauge is reading normally and its only luke warm, is a common complaint, inside your van is a small radiator, air blows across its fins, if there is hot water going through and the blend door opens properly, its fine, so whether the heat is getting through or not is different problems according to the parts that are not working properly. A 150 dollar repair may be a thermostat, a 600 dollar repair may be a heater core, that is what the small heat exchanger is called. If no one has tested it yet, its hard to tell, it sounds like air is getting into the system, but it could also be poor circulation or a clogged core, I mentioned air because of the mileage. Even a leaking head gasket can allow the system to get airbound. I wish I could say exactly what it is, I hope its just a minor fix. Ok? Your best bet is to have someone look at it, you don't need dealer service for a no heat condition, why not bring it to the firestone to have them take a look, sometimes air can be bled out, ok?

There are two things to look at. First, be sure the cooling system is full. If the level is low enough, the heater core in the dash is the highest point in the system, and the flow of hot liquid will stop. The second suspect, especially due to the age and mileage, is sediment has collected in the heater core. That can be flushed out with a garden hose as part of a cooling system flush. It is best to disconnect the heater hoses at the engine so water can be flushed through the core. When pulling hoses off the heater core, there is always the chance of breaking one of the pipes off. It is also easier to spray water into a hose that is disconnected at the engine.

For a start try replacing the thermostat if it continues-start looking into the air mix/blend/mode doors-could also be an actuator/vacuum / the HVAC control module.

Drain about 1 gal of antifreeze from radiator Follow top radiator hose to the thermostat housing at engine Remove housing and observe how thermostat is installed in housing Clean housing and engine where it mounts

Replace thermostat and gasket Tighten bolts on housing securely and evenly Refill radiator slowly to prevent an "air lock" Start vehicle and check for leaks Run to normal operating temperature and re-check coolant level

Also check the other items I've mentioned-

Hi. The single most common repair for a car or minivan that blows cold air is either there is not enough coolant in the cooling system, or your thermostat may be stuck in the open position, not letting the engine heat up properly. If your temp gauge reads too low, or too high, it could be either. With a 7 year 6 cylinder engine you must be very careful as it may be serious. The engine relies on the same fluid for cooling itself as it does for inside comfort for the heater. It may be a minor repair, but I would not put it off too long. Make sure there is coolant in the van. After that have your cooling system tested. It may just need a new thermostat.

Here is a guide to help us

https://www.2carpros.com/articles/car-heater-not-working

Please run down this guide and report back.

To start with, check your coolant level and your coolant strength. It needs to be 50/50 coolant/water mix. If you have too much either of one, your heating will not be as good. I understand that you have installed a new radiator last year. Did you replace the coolant with a new one or did you use the old one?

If your thermostat is stuck open, you will not get the optimum heating from the engine. Try replacing it.

If that does not help, heater core. You don't have to replace it just yet. Try flushing the core. A lot of time clogged heater core will also prevents the optimum heating.