Mechanics

HEAT

1995 Nissan Altima • 4 cylinder FWD Automatic •

Why wont my heater work in my car
Avatar
Allison
November 12, 2010.



With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If they are.

The heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.
Yours may also have a water control valve in the heater hose.

Wrenchtech
Nov 12, 2010.