Question about 1999 Mitsubishi Diamante

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The heater on my 1999 Mitsubishi Diamante will not blow warm or hot air

I have the Temp Control as high as it will go however the air only blows cool fresh air. The air does not get warm at all

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  • Mitsubishi Master
  • 3,103 Answers

Coolant low or heat control valve stuck shut..

Posted on Dec 31, 2013

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Posted on Jan 02, 2017

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SOURCE: Mitsubishi Eclipse Ac and heater problem

cold air on passenger side of car and warm on drivers, why

Posted on Oct 14, 2009

  • 389 Answers

SOURCE: 2002 eclipse heater blows cool air

Check your antifreeze level and if low then add antifreeze until the radiator is full and the overflow tank is up to the correct level. that should solve your problem. If it isn't that, chances are your thermostat could be stuck open which isn't allowing the coolant to warm up properly.

Good Luck

Posted on Dec 19, 2009

  • 10 Answers

SOURCE: re: 1998 Mitsubishi Diamante Air Conditioner problem

check the refrigerant it might have 2 be recharged

Posted on Feb 24, 2010

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Heater on my 1999 Mitsubishi Diamante does not blow hot


check that the hot water can flow though the heater core and that the water control (tap) is working

Dec 30, 2013 | 1999 Mitsubishi Diamante

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My 1999 Chevy Malibu runs hot? It started when it overheated. We changed the thermostat, then water pump, then temp sensor gauge and the temp gauge goes high but only when the heater stops blowing hot...


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Heatercore does not get hot only one hose is hot


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