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Why does my heat only work when I accelerate?
It’s caused when your coolant gets low. Fix your leak and bleed the coolant system. Or you can check this theory by filling and bleeding the coolant system now. If it works, it will be ok until the coolant system gets low and causes the air bubble again.
Why does my heat only work when I rev my engine?
You may have a clogged heater core that may be prohibiting the outer linings of the heater core to get hot. As you know, the heater core is a series of tubes that the coolant runs through that generates the heat from the warm coolant after circulating through the motor.
Why does my heater get cold when idling?
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.
Do you need to rev engine to get AC to work?
Short answer: yes. Long answer: if you are in a situation where you need to rev your engine to make your AC cooler, you shouldn’t be revving your engine. AC is unaffected. Heat does warm up faster but revving your engine too high when it’s too cold can be harmful.
Why does my car’s heater blows cold air when stopped?
Low coolant is number one for good reason, it’s the most common root cause of heater problems. Proper coolant fluid level is important, as low coolant creates a void inside the system and the void creates air pockets. More on this later.
Why does my AC blow cold and then start blowing ambient temp air?
My AC will blow cold and then start blowing ambient temp air. Why? My AC will blow cold and then start blowing ambient temp air. Why? I have a 2002 Chevy Suburban 1500 LT. It has a climate Second opinion] I have a 2002 Chevy Suburban 1500 LT. It has a climate control (automatic settings for fan blowing and which vents to come … read more
Why does my car heat up in the winter?
Reason #1: Not Enough Coolant. Your car uses coolant – usually made up of 50% antifreeze and 50% water – to cool your engine down, especially during the hot months of summer. During the winter when you crank up your heat, the coolant is brought over from the engine to the heater core that then blows warm air into your car.
Why is my car heater not blowing warm air?
If your car is not blowing warm air into the cabin and the coolant level is fine, then you could have an issue with your heater core. If you suspect that something is amiss with your car’s heater core, watch for these signs: Sometimes after using the control buttons for several years, they can get gummed up and stop working.
Why does my Chevy Suburban 1500 blow cold air?
I have a 1999 chevy suburban 1500 with rear a/c & heat.The front get cold but the rear blows cool air. changed rear expansion valve. It seem as though the the hot water is going through the rear.