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There could be blockage in the lines leading to the heater core or in the core itself. You might be low on coolant. The blend door may be stuck in 'vent' position. The valve control may have failed. Except for the low coolant, none of these problems are cheap fixes. See a mechanic but take along somebody you trust who is knowledgeable so you don't get 'taken for a ride.'
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∙ 13y ago
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How will the heater react if the heater core is stopped up?
Your heater will blow cold air only.
Why would a 2001 Chevy Blazer heater only blow cold air?
Low coolant in the system. Defective heater control valve. Clogged heater core.
Why would a 1996 camaro rs heater only blow cold air?
check thermostat, might be stuck closed.
Why does heater in a 2000 Dodge Neon only blow cold air?
you may not have the heater water hoses plugged in
Why would the heater on your bravada only blow cold air?
Possible causes are, low on coolant, thermostat stuck open, clogged heater core or vacuum scorce not getting to the heater control.
Why would a 2000 GMC Envoy heater only blow cold air?
check you antifreze level if it is low you wont have eat or if you get lots of fog your heater core is bad
If the rear heater works ok why does the front heater only blow cold air?
replace front heater corefront and rear have independent heater cores
Why would your 2001 Gallant only blow cold air from the heater?
Your thermostat is the likely culprit here it is probably stuck closed. Have it checked out.
Why your heater in 98 Lincoln town car only blow cold air?
Could be the Climate Control Unit or Clogged heater core.
Heater does not blow hot air only cold on a 2001 Chrysler sebring?
check your coolant level
What could cause your jeep to only blow cold air?
Thermostat and/or heater core may be defective
Why would a car only blow cold air when driving?
Only blows cold air with the a/c on while driving, your cooling fan or fan clutch is bad depending on the year, make and model.......... Only blows cold air with the heater on while driving, you will have a bad or broken internal a/c - heater control door.....
