Question about 1994 Toyota Previa

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Cooling system on 2.2 estima has air lock

Constantly over heating

Posted by magmaster on


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Bill Boyd

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  • Toyota Master
  • 53,816 Answers

Go to a radiator shop and have the air removed
have them check for flow rate through the radiator cores
have a compression test done to check for head gasket or cracks

Posted on Oct 04, 2018


4 Related Answers


  • 54 Answers

SOURCE: Constant Heat

You need a new AC unit.

Posted on Nov 14, 2008



  • 435 Answers

SOURCE: 1995 Toyota Estima. Air Cond stops cooling periodically

The air conditioning system need to be fill with gas,there is not enough gas in it that why it is doing that,Hope that help you,If there is not enough gas ,when you switch on the ac button it turns the ac compressor and cut off immediately because there is not enough gas.

Posted on Jan 17, 2010


Johnny Brown

  • 5763 Answers

SOURCE: It has dual heating and cooling. The air is on

sounds like the blend door motor is bad on the driverside, its located on the heater box, here a diagram to help you locate is on the driverside of the box, heres a picture of it, this is a single zone yours is daul you will see the pass/side motor the driverside i pointed to its location on your car. hope this helps you.bae6268.gif

Posted on Jan 27, 2010

Testimonial: "Thank you so much! The diagram was very helpful."

geoff hunter

  • 4793 Answers

SOURCE: air lock in cooling system.

they used to fit a bleed valve to the topmost heater hose,it aint got one now as you can simply undo the clip and vent it.(its either one of the two on top of the firewall).

Posted on Jan 23, 2011

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