THE HEATER DOES NOT WORK BELOW 3000 RPMS

  • Tiny
  • kathyhart
  • 1993 Toyota Previa
  • 15,000 miles

I have a Toyota Previa 1994. The fan works fine but below that benchmark it blows cold air. Whats wrong? The heater works fine on the highway. If I drive above 3000 rpms it works fine. Around town it obviously does not work well. Does OK in first and second gear if I keep the rpms up.

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Saturday, January 21st, 2012 AT 6:07 PM

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  • Tiny
  • hmac300
  • Expert
  • 43,704 posts

Check the coolant level first. If it's low it won't heat. Then check to see if cables are opening doors and for a faulty water pump or heater control valve.

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Saturday, January 21st, 2012 AT 6:39 PM

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