Question about 2003 Mitsubishi Galant

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2003 mitsubishi galant, heater blowing cold air. Have had the thermostat replaced 2 mos ago. what could be the problem

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Heater core

Posted on Feb 20, 2011

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My mitsubishi galant temp control lever won't switch to heat


that happened to me the heater core went out ive read alot of different things about 03 galants most of them have the same problem it started with a grinding noise turning the temp contol, its actually the heater control motor value it causes the heater core to go out

Dec 27, 2012 | 2003 Mitsubishi Galant

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2001 mitsubishi galant heter dont work blows cold replaced thermostat and radaitor still cold


There is probably some kind of damper that opens and closes under the dash that allows the air from the blower to be blow across the heater core under the dash. Sometimes these are controlled electronically or by vacuum tubes. Look underneath the dash and look for small vacuum hoses that might be dangling loose or possible little wire cables that might have come off the sides.
Possibly check Haynes Manuals (www.haynes.com) to learn how to change a Heater Control Valve.

Dec 15, 2011 | 2001 Mitsubishi Galant

1 Answer

My wife 03 galant's heater is not workin only


Did you replace the thermostat? If it is stuck open the coolant may not get hot enough to be effective.

Dec 04, 2011 | 2003 Mitsubishi Galant

1 Answer

No heat coming from heater.


plugged heater core need to flush it out

Oct 15, 2009 | 2003 Mitsubishi Galant

1 Answer

The heater blows cold air and the anitfreeze is leakig


the clamp is definitely not tight... tighten it first and see if there is a change in heat also refill what you lost in antifreeze also see it the hose itself is not leaking if so replace both to be sure and possible flush the heater core while your at that point .

Oct 15, 2009 | 2003 Mitsubishi Galant

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Heater blows cold air, replaced thermostat &


try to back flush the heater core. and if that dont work check the blend door it see if it is working.

Oct 15, 2009 | 2002 Mitsubishi Galant

1 Answer

The heater blows cold air


if your blower fan is working and it blows would mean you will need to have your thermostat replaced.

Oct 02, 2009 | 2003 Mitsubishi Galant

2 Answers

2003 mitsubishi galant es 4cylheater blowing nothing but cold air


This may be a solution:
I had a similar problem at the beginning of this winter.
My heater was blowing cold air.

My solution:
Heater Temperature control cable, about $10 from dealer
Install, about $70, at my local Firestone

Apr 09, 2009 | 2003 Mitsubishi Galant

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