Why does my water heater not work when its idling?
could also be that since it is idling, the water pump is not pushing as much hot water through the heater core as it does when you are moving. Click to expand… That should not matter. When the cooling system has no air in it, the air would still be hot even at idle. I think you have an obstruction in the line that feeds the heater core.
Why does my car heater not turn on?
Trapped air can be in the core, but it blows out with increased water pump pressure. It does not make sense that the trapped air re-establishes itself every time you reach a stop sign. Another possibility is a heater valve that is stuck partially closed. Click to expand… I would say it’s either air in the cooling system or a bad water pump.
What to do if your cold engine heater doesn’t work?
Fill your recovery tank before driving your truck next time. After you park it overnight, check to see if the level dropped. Keep filling the tank (cold engine) until the level no longer drops. At that point just fill to the appropriate level using the marks on the tank. Air in your cooling system.
What to do if your heater is too hot?
If the floor outlet air temperature is too low, Both of the heater hoses should be hot to the touch. The coolant return heater hose should be slightly cooler than the coolant supply heater hose. If the return hose is much cooler than the supply hose, locate and repair the engine coolant flow obstruction in the cooling system.
Why is the air still hot when the heater is idle?
That should not matter. When the cooling system has no air in it, the air would still be hot even at idle. I think you have an obstruction in the line that feeds the heater core.
Why does my hot water heater blow out cold air?
My heater blows out cold… You may have trapped air in the cooling system or the heater core may be partially plugged up. Engine coolant is delivered to the heater core through two heater hoses.
Trapped air can be in the core, but it blows out with increased water pump pressure. It does not make sense that the trapped air re-establishes itself every time you reach a stop sign. Another possibility is a heater valve that is stuck partially closed. Click to expand… I would say it’s either air in the cooling system or a bad water pump.
Why does my Chevy Impala blow cold air at idle?
I have 2006 impala that randomly will blow cold air at idle. Sometimes if I stop at redlight the heater will blow cold air. If I get the engine above idle by reving the engine to about 1K rpm it starts to blow warm again. The temp gauge remains at the normal spot on the gauge. The radiator and expansion tank are at the correct levels.
Why does the AC blow warm at idle?
Since the AC compressor is driven by the engine, it doesn’t pump as much refrigerant when you’re at a stop or driving slowly. If the system is low on refrigerant, it will show up as AC blows warm at idle and blows colder when the engine is running at higher RPMs. Get your system refrigerant level checked.
Why does my car have no heat at idle?
No heat or hot air during idle is the result of air gap in the heater core. Open hood, driver side fire wall you will the see the heater core rubber hoses.
could also be that since it is idling, the water pump is not pushing as much hot water through the heater core as it does when you are moving. Click to expand… That should not matter. When the cooling system has no air in it, the air would still be hot even at idle. I think you have an obstruction in the line that feeds the heater core.
Why is my hot water heater blowing cold air?
Heater core exterior: The heat-radiating fins on the outside of your heater core could also be clogged with debris that makes its way in from the outside air intake at the base of the windshield. This can affect the heater’s output.