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Why would no heat blow from the vents of a 1992 Chevy Lumina even after replacing the water pump thermostat heater core hoses radiator?
Wiki User
∙ 15y ago
the heater control valve it stuck closed for some reason. Check for a broken vacume line between the heater control to the valve. With the engine running check for a good vacume at the valve with a vacume gauge it should be close to the same reading as the engine vacume. If all is good then the valve is bad GRUNGE BUILD UP ON EVEAPORATOR (CAUSED BY LEAK) AND BLOCKS INCOMING AIR TO HEATER CORE AS IT IS IN FRONT OF IT. YOU WILL HAVE TO PULL THE EVAPORATER TO CHECK. I KNOW OF 2 INSTANCES OF THIS ALREADY INCLUDING ME ; ) GOOD LUCK. There is a seal that sits behind the heater core and fire wall where the hoses connect to the heater core. You can get an air leak there and cool air will be produced by your heating system. To check: with blower running squeeze your hand down by the heater hoses in the engine compartment. If you feel air coming from the blower motor then you will need to seal the leak. you also have a seal that is on the inner cover to the heater box that covers the heater core. That can cause some air leaks also.
Wiki User
∙ 15y ago
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Why would the coolant light come on and the heater blow cold air in a 1985 Cadillac Deville 4.1 even after you tried replacing the thermostat and flushing the radiator?
Heater core (radiator) needs to be cleaned or changed
How do you stop Chevy lumina 95 from runnuing hot?
Replace the coolant, thermostat, turn off the A/c, in emergencies drive with the heater on, increase the air flow through the radiator, have your radiator checked for blockage.
After changing the thermostat you still get no heat in your 1997 lumina?
could be several things. have you tried replacing the heater core. if not that, call a mechanic. you probably won't be able to fix it unless you know what you are doing.
After replacing new heater core and connection all door valves you still have no heat?
Your thermostat might be stuck open. Does the radiator cap get hot after running the engine for 10-15 minutes? If not, replace the thermostat.
What happened to a 1992 Chevy Lumina if it ran hot and all the antifreeze drained out?
Maybe a stuck thermostat, or a broken radiator/heater hose. Sometimes the radiator itself blows a seam. Water pump seal, blown head gasket, etc.
Why does my truck overheat and then when I set the heater to defrost it cools down?
Check the thermostat or the radiator. The thermostat could be sticking or the radiator could be plugged.
Where is the heater core temperature thermostat?
The temperature of the coolant entering the heater core is controlled by the engine thermostat. The engine coolant thermostat is generally located at the engine end of the upper radiator hose.
1993 Chevy Lumina heater not blowing warm air?
Change your thermostat. Mine had the same problem and it was stuck open.
What would cause cold air to blow when the heat is on in your 1989 Dodge Dynasty even after replacing the radiator and thermostat?
most likely you dont have enough coolant to reach heater core. make sure your full
What would cause a 1995 Suzuki Sidekick not to have heat after replacing the thermostat and radiator and all the hoses are connected?
test flow in and out of heater core it may be plugged or need replacing, if it is not plugged up check temp controls, may be stuck in vent or a/c setting.
Is the thermostat the problem when my 1998 Pontiac transport overheats and the top radiator hose isn''t getting hot and the heater blows cold air?
It could be the thermostat. Open up the radiator cap when it is hot and see if the water is flowing in the radiator. If it is not then it may be a thermostat.
Heater has mind of its own goes hot then cold and hot occaisionally. flushed system.new thermostat.radiator.blender door actuator mechanic clueless.still problem. could be heater control itself?
the heater control has a thermostat for the heater only. that thermostat needs replacing
