The heater in my car won give any hot air, only cold. What could be wrong, and how can I fix it?
It is also possible that you have an air bubble in your coolant lines. Over the past 2 years that same thing has happened to me so I took my vehicle repeatedly to the dealership where the car was purchased and they repeatedly told me they fixed the problem by replacing everything everyone else here has previously described. Yesterday I took my car to an independent auto repairman and he told me the Chrysler vehicles are one of the most popular types of vehicles that get an air bubble in the coolant lines. The repairman stated if you take your vehicle and park it on a steep uphill incline and run the vehicle with the heat on for awhile it should clear this issue.
1st and formost make sure the coolant level is full, 2nd if the water temp runs @ 195 to 225 degrees you can pretty much rule out the thermostat. if temp is lower than 195 possibly T-Stat is stuck open.3rd check heater hoses going in and out of the heater core, if one is hot & the other cool, you have a restriction of flow through the heater core,(ie.)a bad heater control valve, or a clogged heater core,and lastly,if all the above check out, you have a cable or actuator not opening the appropriate door to let heat in the HVAC system.
