Questions & Answers for: heater high stop blowing

...heater stopped blowing hot air then blower stopped working except when on HIGH. AC blows cold air but also only on HIGH. One garage sais it is thermostat, another says it is blown head gaskets. But I ...

...heater water flowing at 40 psi but system wont ignite burner, no voltage showing on igniter electrodes combi or standard if combi pressure too high and will be blowing off your high pressure release ...

...worse. check the heater temp. control pot under the hood, inline on one of your heater hoses, it may be sticking causing hot water to only get to your heater core when the engine is at high ...

...high, then kind of fickers and barely glows. I have a fuel filter and a six foot hose off of a 20# cylinder. It doesn't matter which side I attach the 20# or if I combine it with a 1# disposable. ...

...heater fan stops blowing then it blows sometimes? The air is still cold just not blowing out. when it does blow it is cold. replace fan speed resistor block if this only happens on lower fan settings ...

Check level with engine fully warm, heater on high. Check your manual to see if you have any air bleeds, these soemtimes look like grease fitting, and are located at higher spots in the cooling system

high but only when the heater stops blowing hot air. What is causing the heater to go from blowing hot to cool and then hot again? What do I do now? Im at a loss. One minute it is in the center of the

high pressure air through the heater core lines. its sludge build up and need to be flushed through heater core only. check antifreeze fluid level. Did you drill by the passenger side to put mud guard

...have voltage the motor is out, no voltage check the heater control relay. if it blows only on high then its the blower motor resistor located in the duct work under the dash around the glove box ...

Heater temp on high only bows luke warm air after driving. A/C works just fine.Plenty of cold air from it To get any heat I have to turn the heater temp to high & then drive a while & even then its ...