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Why won't the heater blow hot air even after the engine is fully warmed up?
Wiki User
∙ 17y ago
Some things to check. Are the heater hoses warm? if not check for blockage at water pump, heater valve ( valve inline on the heater hose that allows flow to the core) or blocked core itself. If so then check the air mix door inside the cab under the passengers side to make sure it is allowing air flow through the core and blocking the ac and outside air. Low coolant, pluged heater core, feel the hoses to see if they are both warm, door closing outside air not closed. Cable or vacumn pot not closing it.
Wiki User
∙ 17y ago
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Your heater does not blow hot air I put a 180 degree themostat in it why doesn't it blow hot air on a 1995 Chevrolet Pickup?
You have an air pocket in the heater core; drain the radiator, take off the top radiator hose and fill the radiator until it comes out of the water pump and put the hose back on and finish filling it. You need to install a 195 degree thermostat. That is what came in it and with the lower degree thermostat the computer will not see that the engine is fully warmed up and you will use more gas along with other driveability problems.
What would cause the heater on a 1997 Grand Am Gt to not warm up completely and only blow slightly warm air?
It could be the thermostat on the engine. If the engine does not warm up adequately the heater will never blow hot air.
Why would a car heater blow cold air but when it's moving it blows hot air?
check heater core could be cloggedCheck the engine coolant level also.*no, the heater relies on the engine for heat and when you drive the engine warms generating heat:)*
Why does the engine get hot too fast and the heater blow cold air in a 98 Mystic 2.5L V6?
Flush,Clean or change the heater core u need to replace engine thermostat
How do you fix your heater so it will blow out air?
If the heater fails to "blow," then the fan motor (situated on the fire wall inside the engine compartment) is disconnected or has failed and should be reconnected or replaced. But, before either of those, check the heater fan fuse, replace if blown, and re-try the heater.
Why would cold air blow out when you turn on the heater?
engine not warm, low coolant, or stuck thermostat
What would cause a 1984 Porsche 944 to blow hot air when the ACFan is not on but will blow cold when the AC is on?
The heater bypass valve is not fully closing, or leaking hot coolant into the heat exchanger.
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.
1999 Mercury Grand Marquis heater puts out cold air?
Check to insure that the engine coolant is full and the thermostat is not stuck. Without the heated fluid from the engine the heater will always blow cold air.
1988 ford mustang wont blow out hot air of heater relaced thermostat?
With engine warmed up and running, open the hood, locate both heater hoses, feel each heater hose with your hand. If both hoses are equally hot, I would suspect you have a temp blend door problem. Replace the temp blend door actuator. If one hose is hot and the other is only warm or cool, I would suspect you have a plugged heater core, Try flushing it.
What causes the heater to blow cold air when the engine is overheating on a 1999 Cadillac Seville?
Low coolant. If the coolant is low then the heater core is not able to transfer heat in to the car.
