Nissanalmera tino heater stuck on hot - 2001 Nissan Almera Tino

If so it should say blower motor.

Is the heater core hot? It could be clogged.. remove the two hoses to it and run water through it in both directions to flush it out. There's also a valve that needs to open to allow water flow through the heater core.

That noise is the heater and AC air temperature control electric blend door motor trying to move a duct door that is sticking due to heat warping. You will need to remove the entire dash assembly and replace the blend door. This door is located between the AC core and the heater core and "blends" the air from each (hot from heater core and cold from AC core) to give the desired air temperature,.

CHECK FOR LOW COOLANT,NOT ENOUGH COOLANT IN THE SYSTEM.IF COOLANT LEVEL OKAY.THERMOSTAT NEED CHANGING STUCK OPEN.IF THERMOSTAT BEEN REPLACED.CHECK BOTH BOTH RADIATOR HOSES AND HEATER CORES HOSES THEY ALL SHOULD BE VERY HOT.IF ALL HOSES HOT AND BOTH HEATER CORES HOSES GOING INTO FIREWALL IS HOT.HEATER DOOR NOT OPEN ALL THE WAY OR STUCK.IF ONE OF THE HEATER HOSES GOING INTO FIREWALL HOT AND OTHER HEATER HOSE COMING OUT OF FIREWALL NOT HOT.MORE LIKELY HEATER CORE PLUGGED NEED TO FLUSH OUT COOLING SYSTEM.FLUSH OUT COOLING SYSTEM IF NOT BEEN DONE IN A LONG WHILE.

Check the heater control valve. Usually located on a heater hose between the firewall and where the hose attaches to the engine. Warm the engine, turn the heater on full hot, feel the hose with the valve in it. If the hose is hot on both sides then the valve is probably OK. If hot only on the engine side of the valve then the valve is not opening when the control calls for heat. Probably a stuck valve or leaky vacuum control hose. Otherwise I would suspect either a clogged heater core or a stuck open engine thermostat .

the thermostat is either stuck open or the heater core is clogged

Thermostat stuck open, heater core clogged, or heater control coolant flow valve stuck closed. With the engine at full operating temperature check the hoses at the firewall going to the heater. If one is hot and the other is cold or just barely warm, the heater core is clogged or the coolant flow valve is stuck closed. If neither is hot, you have a thermostat stuck open and need to replace it.

the majority of heater resistors are on the heater box under the passenger ide of the dash, on some very few models it is part of the actual ac control panel

Hi there, very common on these vehicles, you need to remove the heater cotrols and check that the cable hasn't come out, usually the clips that hold the cables in place break causing the heaters to not work properly, Nissan do modified clips now to stop it from happening, it may need a cable too if its too far bent, hope this helps.

Warm up vehicle. Then, from the engine compartment, grip each heater hose to check if they are HOT. Not warm HOT. If they are both hot, then the BLEND DOOR is stuck to the cold position. Access this thru glove box area.

If they are not HOT, then check radiator hoses for proper heat. If radiator hoses are not HOT then thermostat is stuck OPEN.

If they are HOT then there may be a restriction in circulation to the heater hoses and heater core.