i have had a brand new thermostat that would not close, try replacing it again with factory parts not one from discount auto supplier.
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.
no heat can be caused by,blocked heater core insufficient coolant in engine blocked heater hoses from engine to heater core bad heater thermostat bad thermostat in engine bad heater control switch
Yes it will stop heating up...........
System airbound and needs to be purged
Yes, A bad thermostat can keep the hot coolant from reaching the heater core... also, low coolant levels or a clogged heater core can make your heat stop working.
heater core stopped up, heater control vavle not working, controls under dash not working, low in coolant, theromstant, radiator not flowing properly, water pump.
Low coolant? Thermostat not opening? Control cable not working? Plugged heater core? Heater core "airbound"? Low coolant? Thermostat not opening? Control cable not working? Plugged heater core? Heater core "airbound"?
Low coolant? Bad thermostat? Heater core airbound? Heater core restricted or plugged? Defective radiator cap not building sufficient pressure?
Either the temperature blend door is not working, the thermostat is stuck open or you are low on engine coolant.
If the heater in your Renault Scenic is not working, first check the coolant level, as low coolant can affect heater performance. Inspect the thermostat and ensure it's functioning properly, as a stuck thermostat can prevent the engine from reaching the right temperature. Additionally, examine the heater control settings and any potential blockages in the heater core. If these steps don’t resolve the issue, it may be necessary to consult a mechanic for further diagnosis.
Low coolant? Bad thermostat? Heater core plugged, restricted, or airbound? Temperature control cable not working?
Thermostat stuck open or a clogged heater core. Service and flush the cooling system and replace the thermostat.