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Heater on mr2 spyder won't blow warm air - MR2 Toyota Cars & Trucks

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 49 Answers

SOURCE: reverse unit. Heater only blows air, not warm air

If you have a reverse cycle unit (heat pump) your compressor and your fan should be running. You need to determine if your compressor is running.

Posted on Nov 08, 2007

  • 4 Answers

SOURCE: Heater on driver-side blows barely warm air other vents blow cold

the most probabale cause of this would be a disfunctional hear core if you replace your heater your heater will more than likley work the the way it's supposed to

Posted on Jan 18, 2009

  • 3 Answers

SOURCE: blowing cold air

I had the same problem that I just fix by flushing the heater core out with a hose.   take the two hoses off the fire wall and put the water to it and let flush.  my heater is putting out 150 dg. F  of hot air.   I'm so excited!  i will stay warm now.

Posted on Feb 27, 2009

SOURCE: heater doesn't blow warm air. Not the thermostat

Sounds like either the valve which lets water into the heater core is not working properly or the vacuum operated door which directs blower motor air over the heater core is not opening, Could be a vacuum hose loose or it has a hole in it.

If you want to further discuss, let me know,

Posted on Apr 28, 2009

philschneide
  • 448 Answers

SOURCE: Why would the heater not blow warm air after car

Yes, that would indicate a stuck thermostat:
This is how you change it, or have it changed:
Disconnect the negative battery cable from the battery (if you have an anti-theft radio, make sure you have the code)
Drain the cooling system. Drain petcock is at the bottom of the radiator. (if the coolant is fairly new, save it)
Follow the LOWER radiator hose to the thermostat housing.
Compress the hose clamp with pliers and work the hose off the housing (you might want to replace the clamp with a better type when you put it back).
Remove the bolts and detach the housing cover. If the cover is stuck, tap it with a soft-faced hammer to jar it loose. Be prepared for some coolant to spill out when the gasket seal is broken.
IMPORTANT: Note how the thermostat is installed (which end is facing out) then remove the thermostat.
Stuff a rag in the opening, then carefully clean off any remaining gasket and/or sealant from the housing and the cover with a scraper. Remove the rag and wipe the surfaces.
Install the new thermostat in the housing, making sure the correct end faces out and make sure the air bleed (usually a little arrow) is at the top.
Apply a thin coat of RTV sealant to both sides of the new seal (gasket) and position it on the housing and replace the cover and the bolts. Tighten to 9 ft.lbs torque.
Replace the hose and clamp. Refill the coolant system (radiator).
Run the engine until warm and check for leaks and proper gauge temp, and check your overflow bottle in case more coolant is needed.
Hope this helps you deal with the problem.

Posted on Dec 01, 2009

Testimonial: "Thank you so much for the help with the thermostat. It works great now. Just have one problem. The temp gage doesn't read anything now.Why?"

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There are a couple of possibilites. 1 Is your vehicle equipped with seperate climate controls for the driver and passenger, if so your warm/cold air motor door on the drivers side is malfunctioning. This is located under the dash.2 Your climate controls on your dash are not working properly. Hope this helps.


Please take a moment and rate my answer..........Thanks

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The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.

if the car is not overheating, the thermostat is working fine.... replace or flush the heater core multiple times to try and eliminate sediment build-up.

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