• Tiny
  • allison
  • 1995 Nissan Altima
  • 4 CYL
  • FWD
  • automatic

Why wont my heater work in my car

Do you
have the same problem?
Friday, November 12th, 2010 AT 2:19 PM

1 Reply

  • Tiny
  • Wrenchtech
  • Expert
  • 20,443 posts

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.

Was this
Friday, November 12th, 2010 AT 2:27 PM

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