It sounds to me like the heater core is out. Have you noticed the floor wet recently? that's a sure sign of heater core issues. The other option is it will act like that if it has no antifreeze or water in the radiator, in other words the radiator is dry.
Just a suggestion if someone has replaced the thermostat its possible they installed it pointing in the wrong direction this could account for cold air and the guage reading over hot. , EzForJesus
I would suggest replacing it.
Passenger side, near the firewall inside the car.
Usually at the firewall either passenger side or middle follow the heater hoses
under the dash right hand side.
The water pump pushes the coolant through the engine block and head(s) then into the heater core.
You can get a heater that magnetically sticks to the pan and warms the engine. You can get a heater that connects to the heater hose and circulates warm engine coolant. You can also get a block heater that replaces a freeze plug. You have to decide which works best for you.
heater core is shot. Take it to a shop, you don't want the headache involved in doing it yourself!
No, a clogged heater core will not make it overheat. A leaking heater core will.
i replaced my heater core and it has been fine ever since (8 months )
A leaking heater core will cause the engine to overheat because the coolant is leaking out.
Where is the heater core for a 2002 pontiac montana
there should be 2 hoses going into that firewall for the heater core, it is probably bad. find the 2 hoses and connect them together until you can repair the heater core, at least it will be driveable. one end of the hose attaches to where the top radiator hose connects to the motor, and the other end is on the water pump towards the bottom of the opposite side.
It is possible that your radiator is partially plugged or the heater core is leaking coolant or the thermostat is the wrong temperature. Sorry for so many scenarios, but I have seen all of these.
generally if an engine overheats, but then does not overheat when heater is turned on, is a good indication that the engine thermostat is stuck and needs replacing
check the heater core
The Pontiac G6 block heater is located on the right hand side of the engine. The block heater can be located by following the block heater cord.
How to change a heater core on a 1997 Pontiac grand am
A malfunctioning thermostat can cause your temperature gauge to go up and then allow the gauge to go all the way down. When the thermostat is stuck closed, your engine will overheat and water will not get to your heater core. When the thermostat opens the engine cools down and water flows to the heater core.
I can't find my block heater plug on my pontiac G6 2006,,,Where is it? Maybe it does not have a block heater.
The heater core is located on the firewall, in the middle of the car. Exactly behind and below where the heater/a.c. switch and the radio are located. To access it you must remove the the right and left under dash panels, remove the heater floor outlet duct and then remove the screws that secure the heater core cover and remove cover. There are also retaining straps holding the heater core in place.
Please clarify your question and include make, model, year, engine size and transmission. Are you asking about an actuator for the turbo charger? The waste gate on the turbo charger? Or for the heater vent controls?
If you cannot change the temperature from cold to hot on an Equinox or Pontiac Torrent, a common cause is a broken temperature door. This is a very difficult repair.------------------------
where is the heater core at
Where is the the heater control valve??
coolant level could be low not letting it circulate through the heater core, causing it to blow cold. Also, if the coolant level is low it will in turn overheat.