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Q: Why do the heater work and the defrost don't work?
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Why would your heat only work on defrost?

ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?


My defrost fan is blowing but will not defrost my windows?

That means either you have air in your heater core or your heater core is being bypassed


On my 95 Toyota corolla The heater defrost switch wont click over to defrost anylonger so the front defrost wont work is there a way to manually switch it over or how would i fix that?

You could always take it to the shop You could always take it to the shop


What causes the heater-defrost blower only ro work on high speed on a 1998 Dodge Stratus?

blower motor resistor is burned out


What can be done if pipes in the refrigerator freeze?

More than likely its the defrost timer or the defrost heater. You can try and advance the timer which is usually located at the top of the refrigerator compartment. Its usually a small round circle with a slot in the middle. Take a slotted screwdriver and advance it till you hear it click then stop advancing it. This more than likely is defrost mode. It should kick on the defrost heater. Listen closely if you can hear the heater kicking on and sizzling the ice. If you do advance the timer to run after about 1/2 an hour and repeat the process until the ice is gone. If this works then the timer is defective and needs replaced. If this process doesn't work then the defrost heater is probably defective.


What does heater hoses do on a vehicle?

a heater hose runs from intake to heater core to radiator. the heater core is were the heat comes from inside the car as well as defrost


Heater and air conditioner dont work?

Check main breakers.


Why does heater on 1998 hondra crv not work well?

i dont now


Do cars made for Florida have defrost and heat?

Yes they have a heater/defroster.


Heater control does not work on 1991 Plymouth voyger. fan operates normally. control stays on defrost only will not switch to any other function?

can happen when vacuum line is disconnected . look under hood to right of heater hoses. one vacuum line goes to heater valve (gate)on heater hose ,the other should go past this to a small sized metal object the size of a small lemon. if this is disconnected only defrost will work. I HOPE YOUR 91 IS SIMILAR TO MY 93.


Car heater just defrost work?

When you set the control, if you chose defrost, it usually does it at the temperature you specify. So if you want heat only blowing through the windshield vents, which I believe may be the question you are asking, it varies between makes of cars. This is what to look for : defrost, fan speed, temperature. If you mean "Can a car that only has a heater ( no air conditioning ) be used to defrost?" The answer is still yes. I believe the question is missing words. It is comparable to asking "Hand, just finger work?" You might try asking again, being more specific, explaining why it is a problem.