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Why does the car heater blow cold air until driven for a while?
Wiki User
∙ 15y ago
it has to heat up, just like water has to warm in the faucet.
Wiki User
∙ 15y ago
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Why does the heater blow heat while driving and cold at idle?
you need to replace your heater core
Why doesn't a 1991 Cadillac Deville AC-heater blow air?
If it does not blow at all then that is a problem, but if it is when you first start it, the Caddy will not blow air on you until it is the selected temp.
Why does your heater blow cold air while idling but blows hot air while driving?
Low coolant, failed thermostat, partially plugged heater core...............
Your heater will not blow on your 1996 Ford Contour?
heater will not blow on a 1996 ford contour
Why does your heater not blow out warm air?
if the heater does not blow out warm air change the setting.
How do you blow out a heater core?
I disconnect both heater hose off of the engine, then fabricate a fitting that will attach a garden hose to one of the heater hoses. While directing the other hose towards a bucket, I gently turn on the water supply to wide open and let the water run until it shows clear, then reverse the flow into the heater by switching hoses and repeat.
Why does the heater not blow air?
The heater does not blow air because it emits infrared rays that have heat molecules within them, thus releasing heat, not blowing it. A heater does not blow air becasue there is no moving air source within the heater. The heater emits infrered rays that cause heat to slowly flow out of the heater.
Why would a heater blow cold air at an idle and warm air while driving?
Low on coolant. Stuck open thermostat. Poor circulation (plugged heater core).
How will the heater react if the heater core is stopped up?
Your heater will blow cold air only.
Why does the heater on my Chevrolet 2500 hd duramax not blow hot air?
The engine needs to be hot in order for you to get got air. On a cold morning, even if you let your truck run for a while, will not get hot enough to blow hot air usually until you drive it for a little bit. When it gets at or near operating temperature there is no reason that it shouldn't blow hot air.
Why does heater blow cold air when car is idling?
The heating system doesn't get heat until the car warms up and the thermostat opens.
Why does the heater on a 2000 Dodge Grand Caravan blow cold while driving down the freeway and then when it idles for a few minutes will finally blow hot air?
It is either your water pump or your thermostat
