2002 Mitsubishi Galant Heater Blowing Cold Air

Tiny
GALANT2002OWNER
  • MEMBER
  • 2002 MITSUBISHI GALANT
Heater problem
2002 Mitsubishi Galant 4 cyl Two Wheel Drive Automatic 124K miles

My Mitsubishi Galant 2002 blows only cold air (The A/C seems to work fine). I checked with the dealer and he stated that the Hot/Cold pump needs to be replaced. If that is the issue (pump not working) even A/C should not work or car engine should get overheated. Am I correct? Based on the articles on this website it makes me feel that the heater valve is not working. Any suggestions?

Should I replace the hot/cold pump first and then check or should I replace the heater valve first?
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Saturday, October 23rd, 2010 AT 8:36 PM

5 Replies

Tiny
RASMATAZ
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Hi Galant2002Owner, Welcome to carpros and TY for the donation

You might want to start at checking the thermostat if its stuck open. Heater core not clogged-up, heater control valve and the air blend door if its stuck in the cold position
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Saturday, October 23rd, 2010 AT 9:32 PM
Tiny
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Any suggestion on how to
- check the thermostat if its stuck open.
- heater control valve and
- the air blend door if its stuck in the cold position
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Monday, October 25th, 2010 AT 3:30 PM
Tiny
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What pump are they talking about?

If you haven't change the thermostat-do so and then comeback or you can test it by using hot water

The heater control valve is where the heater hoses are attached too-

Air blend door you have to open it up the dash and check its operation
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Monday, October 25th, 2010 AT 5:58 PM
Tiny
GALANT2002OWNER
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The dealer referred as hot/Cold pump. He was referring to water pump.

I will check suggested steps and get back to you.

I have another problem and wanted to check if these two are inter-related? The second problem is - Even if I blow air through the vents on the windshield, the fog from the middle bottom portion of the windshield doesn't go.
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Thursday, October 28th, 2010 AT 10:13 PM
Tiny
RASMATAZ
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There's a door/flap that's not opening-you need to open it up also check the air blend door could be stuck on the cold position

If the water pump is defective the engine will overheat-coolant is not circulating and heat is not being removing from the engine
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Friday, October 29th, 2010 AT 10:40 AM

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