heater core or something else?
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Lead Driver
Joined: Apr 2001
Posts: 6,335
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From: Midwest
heater core or something else?
My son has a 1999 mitsubishi galant. The heat will only blow warm for a couple seconds,then goes cold or lukewarm. I replaced the thermostat and that didn't help at all. Would it be the heater core? I noticed one hose is hot and the other is barely warm on the heater core after the car has been running for a long time. Would it help to flush the heater core? How hard would that be? the heater core isn't leaking but I guess it still could be not working properly? Thanks for any help!!
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
It's probably plugged, I had one yesterday in a GM truck. Put a garden hose on one heater hose, not much happened, put it on the other and it blew out a big pile of orange goop. The truck has heat now.
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