No heater? Not working?

Hello,

It sounds like the temperature blend door actuator is not working here is a guide to help walk you through the repair and diagrams below to show you how to fix the problem on your car.

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

This guide can help as well

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

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed. Joe

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.

Thermostat is not opening need to replace

For a start replace the thermostat could be sticking open.

Check heater core hoses the two coming from the firewall they should be hot is one is hot and the other warm then you have a clogged heater core and it needs to be flushed
if both very hot then I would suspect blend door motor inside on the HVAC box

THis guide can help

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

It sounds like a mode actuator.

USE NOTES: Change the water pump there was no fins left on the pump to sica let the water changed mine and it works great

If the two heater hoses hot then its the blend door motor stuck on cold
remove and replace blend door motor

First, if you have to keep adding, it is going somewhere. Try putting a piece of cardboard under the vehicle over night to see if there is any on it in the AM. Next, check to see if there is any coolant getting into the motor oil. It will make a lite brown creamy substance. Finally, with the engine hot, the heater on high, feel both heater core hoses. Both should be hot. If only one is hot, flush the core. If they are both hot, check the blend air door near the heater core. It is responsible for allowing heat to enter the vehicle.

Check and test the water pump if okay if it has a heater control valve check that-also for a clogged heater core

One way to test for a bad water pump is to squeeze the upper radiator hose when the engine is hot and idling. Careful, because the hose will be HOT! If you do not feel much coolant circulating through the hose when you rev the engine, the pump may be bad. The other cause might be a bad thermostat that is not opening properly (remove and inspect the thermostat), or a clogged radiator.

If you open the hood and check by the firewall you will notice two heater hoses going into the firewall and connect to the heater core
this is a common problem that I've seen and is the heater core need to be flushed
for start
Check coolant level
Is the car reaching operating temp
Check heater core hoses if both are hot,
if both hoses hot and not enough heat inside suspect blend door actuator
if not one hose hot and the other warm or cold the heater core need to be flushed (very common)
as a 1st step
these are the steps
WARNING: NEVER REMOVE THE PRESSURE RELIEF CAP UNDER ANY CONDITIONS WHILE THE ENGINE IS OPERATING. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN DAMAGE TO THE COOLING SYSTEM OR ENGINE AND/OR PERSONAL INJURY. TO AVOID HAVING SCALDING HOT COOLANT OR STEAM BLOW OUT OF THE COOLING SYSTEM OR DEGAS BOTTLE, USE EXTREME CARE WHEN REMOVING THE PRESSURE RELIEF CAP FROM A HOT COOLING SYSTEM OR DEGAS BOTTLE. WAIT UNTIL THE ENGINE HAS COOLED, THEN WRAP A THICK CLOTH AROUND THE PRESSURE RELIEF CAP AND TURN IT SLOWLY UNTIL PRESSURE BEGINS TO RELEASE. STEP BACK WHILE THE PRESSURE IS RELEASED FROM THE COOLING SYSTEM. WHEN CERTAIN ALL PRESSURE HAS BEEN RELEASED, PRESS DOWN ON THE PRESSURE CAP (STILL WITH A CLOTH), TURN AND REMOVE PRESSURE RELIEF CAP.
Engine cool
lower the coolant level
Locate the two hoses running to the heater core
disconnect them at the engine side leaving hoses connected to heater core throw the firewall
make sure you pinch and close the bypass hose between the two heater hoses
use garden water hose and compressed air if possible
run the water and follow by air throw one side and out the other and vice versa
do that two to three times watching what leaving the heater core you are looking for the good flow and clear water to run throw
reconnect hoses
top off coolant system
good luck
let me know

Try and flush it again
and it should get better