1999 Dodge Dakota Heating

1999 DODGE DAKOTA
78,000 MILES
Avatar
BRYANB990
  • MEMBER
  • 1 POST
When fall and winter comes I can start my truck and let it run for a while to warm up to normal operating
temperature as shown on the temperature gauge on the dash panel. When I turn the heater on, the fan works great,but the temperature of the air is not warm. Its somewhat warm, but not enough to produce enough heat to be comfortable.
What could be the cause? heater core? thermostat?
Oct 24, 2013 at 1:05 AM
Advertisement
Avatar
WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 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 not too hot to hold, then you have to look at the actual engine temp and if that is up, if it is, then your looking at a restricted heater core.
If you find that they are both too hot to hold, then 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.
If they are both not too hot to hold on to, then you either have a restricted heater core or the system is not completely full and getting air pockets for some reason.
Oct 24, 2013 at 2:16 AM