» » »

Toyota Q&A

Ask Your Question

2001 Toyota Celica Question: heater doesn't always work



, 1.8L 4 Cylinder, College Station, TX, December 28, 2010, 01:40

The heater doesn't always work. Sometimes it will come on after driving for a while. I have checked the water level and the leaving water line out of the heater is cold. What could it be?

1 Answer
Flag This
  • Answer #1

    December 28, 2010, 15:12

    Does the engine warm up completely? I'm wondering about the coolant thermostat being defective and allowing the engine to run too cold. Another thing is that there may be a problem in the heater control module in the dash or that the blend air door actuator is not working. It's also possible that the heater core is plugged or there's a blockage in the lines to or from the heater.
    You may need a Toyota specialist for some help on this.
    Here's a directory link for you:

    Flag This