Question about 2004 Toyota Tacoma

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2004 Toyota tacoma Pre runner 4 door AC works fine blows cold, No heat ? have checked radiator and thermostat as well as heater core have hot coolant running through entire system but still no heat not on defroster, floor or vents blower is blowing cold or very cool air any ideas? even with the A/C on the hot to cold contorl knob seems to make no difference at all. Help its starting to cool of and would like to fix prior to cold setting in!!!!

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  • Toyota Master
  • 76,846 Answers

You have a problem wit the air temperature control blend or the blend door actuator motor, most times both are defective. The parts are located deep in the dash and as such the dash assembly must be removed to service the parts.

Posted on Jun 26, 2017

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Posted on Jan 02, 2017

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  • 11 Answers

SOURCE: heater blowing cold air with coolant, fine with plain water

it sounds like the heater core is clogged bad if u know someone with a air compressor put a air nossel on it that you pull the trigger to blos air in to the heater core after you take the lines off i had to do this before on a jeep cherokee it did the job

Posted on Jan 11, 2009

  • 496 Answers

SOURCE: 94 Celica Heater not blowing

Could be a blown fuse for the blower motor or the blower motor itself is worn out. There is also a blower motor resister pack that could be at fault--it has three resisters in it that vary the blower speed--but it would be unusual for it to fail in such a way that the blower stops. Usually it just gets stuck on one speed. However, the resister is located down near your feet on one side (I forget which for that model) and if the wiring connector becomes unplugged (from an accidental kick), then the blower won't work.

Posted on Feb 21, 2009

  • 1 Answer

SOURCE: A/C will suddenly send out heat. Fiddling with knobs seems to help. What's wrong?

You have a broken wire connection between the temperature control knob and the circuit board behind the center dash console. Vibration causes the failure and once the control knob gets loose the solder connection fails.

For someone that knows how to remove the dash unit and can re-solder a couple of new wires this fix should take no more than 1 hour. Make sure that you apply loctite to the heat control knob spindle nut when you re-assemble it.

The dealer quoted me 750 dollars to fix this issue and I found out that it's a common failure for this year. I fixed mine virtually for free but it took some tools and about an hour of my time.

Posted on Jun 21, 2009

catbob007
  • 70 Answers

SOURCE: 4 Runner Blows hot air on driver's side

something fell down defrost vent

Posted on Jul 27, 2009

  • 290 Answers

SOURCE: No heat/defrost 01 corolla

Sounds like you have air trapped in the heater core when you flushed the heater core. loosen the upper most heater core hose and run the engine untill coolant seeps out. Wait until the coolant has reached running temperature.

Posted on Jan 18, 2010

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