Why does my car heater blow cold while running?
Heater blows cold while in idle but hot while running. I’ve read about air in the cooling system as a common cause for Nissan Frontiers (and Titans). It has a pressurized coolant reserve tank and no bleeder valve. Is there a good way to bleed the system of air?
What’s the temp of a car heater at idle?
I bled the coolant system as much as possible, was able to get some air out and top off the system. It warms up quick and stays at a steady temp, but heat still blows cool (maybe a little better…). It blows at about 70 degrees at idle (an can melt your face off while driving).
Why does my air conditioner keep blowing cold air?
A plugged heater core. If proper coolant flow through the cooling system is verified, and heater outlet air temperature is still low, a mechanical problem may exist. MECHANICAL PROBLEMS. Possible locations or causes of insufficient heat: An obstructed cowl air intake.
Why does my heater make a high idle noise?
Same thing with the heat. No heat till Im driving on the highway. I notice that while driving, there seems to be a high idle noise. When i turn the heater or the AC on, the high idle sound goes away. What may this be? 1998 Dodge Ram Van B1500 V6
Why does my car heater blow cold air?
As soon as I stop at a red light, or am idling for any length of time the air coming out of the vents begins to lose temperature until it blows cool air. All I have to do to get hot air again is give it a little gas, say 200 more rpms, and the heater immediately responds with warmer air, hot air if I maintain 1000 rpms.
Why is my heater not working in my car?
The other possibility is that the thermostat may not be allowing the engine to reach a normal operating temperature and since the engine’s warm coolant is the essential source of the heater core supplying heat to the inside of the vehicle, this can impact the warmth of the heat inside the vehicle.
Same thing with the heat. No heat till Im driving on the highway. I notice that while driving, there seems to be a high idle noise. When i turn the heater or the AC on, the high idle sound goes away. What may this be? 1998 Dodge Ram Van B1500 V6
What to do when your Chevy Impala heater blows cold air?
Turn the heater on wait for about 1min then press the gas petal and try to hold it at around a thousand rpm on and off about three times and heat should be blowing out really hot by then. 8 people found this helpful.