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Check thermostat, if that's ok make sure the system is full of coolant. If you have recently changed a cooling system part (water pump, thermostat, heater core, etc.) then you may have an air pocket in the system which will make you think it is full of coolant but actually is not, thus intermitten heat. Hope this helps.
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∙ 16y ago
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I have a 94 ford explorer but just recently the heat stopped working and only blows out cold air. every once in a while it will turn on but only for a couple seconds. what could be the problemHELP?
The heater is blowing out cold air only
Your gas heater is blowing cold air The furnace flame will turn on for about 10 seconds then shut off It only turns on about once every 5 minutes Any ideas?
Probably the flame sensor.
Do you use the water heater when you use just cold water?
If water is only drawn from the cold faucet, then no, the water heater is not involved. However, if water is drawn from the hot faucet- even for a few seconds- hot water IS withdrawn from the heater, and fresh cold water drawn in to be heated- even if the hot water did not make it all the way through the pipe to the faucet- and the water heater will work to heat that fresh cold water.
Can you catch a cold in the cold after being in front of the heater?
No
How will the heater react if the heater core is stopped up?
Your heater will blow cold air only.
Why does your heater blows cold then hot then cold then hot?
It is because your heater is having to heat up so its blowing cold air out while its heating up.This means your heater is not very efficient and it needs to be checked.
Why is your 93 GA GT runs cold and the heater does not work?
If you are saying the heater is blowing out cold air you need to change the heater core which is located inside the dash
My 01 town and country heat blows hot for about 30 seconds then it gets cold i changed the thermomstat and water pump and it still does the samething what can you do?
Try flushing the heater core.
How do you know if the block heater on a 1995 K2500 Diesel suburban is working because mine won't start in cold weather even after being plugged in all night?
When you first plug in the heater have the hood open and in a few seconds you should be able to hear the heater kicking in. It will make a sizzling noise.
Why does cold air come from the heater?
possible clogged or damaged heater core
Car heater blows cold air when not driving?
A car heater taps off engine heat. If you aren't driving, then the engine is cold and there's no heat for the car heater to use.
If the heater works but blows cold air and heater core is good what do i check next?
Get the air out of your heater core.
