Your heater will blow cold air only.
you may not have the heater water hoses plugged in
replace front heater corefront and rear have independent heater cores
Sounds like the Blend Door actuator, a $6.00 part but about $2,000 in labor, the dash has to be removed to do the job right.
Low coolant in the system. Defective heater control valve. Clogged heater core.
Thermostat and/or heater core may be defective
check your coolant level
Check coolant level
Possible causes are, low on coolant, thermostat stuck open, clogged heater core or vacuum scorce not getting to the heater control.
You are low on coolant to the heater core.
Check for low coolant
check thermostat, might be stuck closed.
check you antifreze level if it is low you wont have eat or if you get lots of fog your heater core is bad
You probably need to replace the heater core. Be sure to also check your coolant levels, as well as the condition of the coolant - if it's burned out, have the cooling system flushed and the coolant replaced.
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.....
Poor circulation from a faulty thermostat or a plugged heater core. Be sure the coolant reservoir is not empty.
hi, did you faind an answer, i'm having the same problem, Cheers
It depends on the type of heater you have. It may be maintaining the room temprature or it may be warming up ( just like how air conditioners start hot )
Either the linkage from the temp control unit to the valve on the heater core (which is behind the radio and temp controls) or it is the heater core itself.
Your thermostat is the likely culprit here it is probably stuck closed. Have it checked out.
bad engine thermastat With my car, it was Heater matrix clogged with radiator sealant. The workshop cleaned it and it's start working fine!
An automobile's heater that blows only cold air could either be a faulty thermostat or, more likely, a faulty heater core. A trip to a mechanic or shop that specializes in radiator and cooling system repair should be able to diagnose and repair any problems.
Your car could be low on antifreeze or your heater core could be clogged. With my car, it was Heater matrix clogged with radiator sealant. The workshop cleaned it and it's start working fine!
The (DCCV) dual climate control valve may be damaged also called heater control valve.