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12-03-2005, 12:12 PM | #1 |
Scooby Guru
Member#: 60324
Join Date: Apr 2004
Location: soon to be somewhere else
Vehicle:1998 RS |
heat stops working sometimes
Found lots of threads on overheating, but nothing on this. Over the last few weeks, my heat will stop working and turn cold. I'll shut it off for a minute and it'll come back in a few seconds, then go away again. Doesn't happen all the time but it seems to be happening more and more. any suggestions? heater core??
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12-03-2005, 01:52 PM | #2 |
Scooby Guru
Member#: 10309
Join Date: Sep 2001
Chapter/Region:
NWIC
Location: Seattle, WA
Vehicle:'02 OBS 2-tone! White |
I suppose it could also be air bubbles in the heater core. Have you changed the coolant recently? In any case, I'd let the dealer deal with it under warranty.
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12-04-2005, 09:58 AM | #3 |
Scooby Guru
Member#: 60324
Join Date: Apr 2004
Location: soon to be somewhere else
Vehicle:1998 RS |
na, coolany hasn't been messed with for a long time. It's a stage 4 car with almost 60K on it, no warranty here
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12-04-2005, 11:04 AM | #4 |
Scooby Specialist
Member#: 100610
Join Date: Nov 2005
Location: Lewistown, PA
Vehicle:2002 WRX MBP |
What's your coolant level like? I've seen where a car would lose heat at idle, and pick it back up when you hit the gas....coolant level was low.
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12-04-2005, 01:46 PM | #5 |
Scooby Guru
Member#: 60324
Join Date: Apr 2004
Location: soon to be somewhere else
Vehicle:1998 RS |
hmmm, i'll have to check that out later when the car cools. sounds possible.
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12-13-2005, 02:23 PM | #6 | |
Scooby Specialist
Member#: 25038
Join Date: Sep 2002
Chapter/Region:
Tri-State
Location: Central Jersey
Vehicle:2002 PSM WRX sedan |
Quote:
That's what mine is doing right now. I'll have to check the coolant level when I get home. Thanks! |
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12-13-2005, 02:45 PM | #7 |
Scooby Newbie
Member#: 82247
Join Date: Mar 2005
Location: NE Ohio
Vehicle:2005 Saab 9.2x Aero satin grey |
Thermostat? Your car isn't making much heat at idle, so if your thermostat is sticking just a little bit open, that little flow thru the radiator can overcool it. When you go driving, the engine makes a lot more heat so then it's good.
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12-14-2005, 12:36 PM | #8 |
Scooby Newbie
Member#: 57926
Join Date: Mar 2004
Chapter/Region:
NESIC
Location: Connecticut
Vehicle:2003 WRX Wagon Sonic Yellow |
Any more information about this problem? Mine just this morning started blowing cold air. It was working fine, engine warm, temperature knob set to full hot, and then all of a sudden, cold air started coming out. Outside temperature was around 12 deg. F.
Any thoughts? Recently, I too have noticed that it doesn't heat very well at idle. Thanks, Scott |
12-14-2005, 12:58 PM | #9 |
Scooby Guru
Member#: 60324
Join Date: Apr 2004
Location: soon to be somewhere else
Vehicle:1998 RS |
my coolant level was fine, and my car has stopped doing this. I don't think it's a thermostat issue, becuase my heat is HOT one second, and freezing cold the next. Then hot again 10 seconds later. Even if the thermostat was stuck open, the coolant is still going to be hot enough to make hot air, no? Maybe the heater core isn't getting proper flow due to the cold weather?
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12-14-2005, 11:39 PM | #10 |
Scooby Newbie
Member#: 60116
Join Date: Apr 2004
Location: (ab)Normal IL
Vehicle:1999 RS Coupe Silver Thorn |
don't forget that the heater coil acts like a radiator. If the thermostat is stuck open the coolant will cool off quickly. The only way the heater core would get improper flow is if the coolant was slushing or freezing.
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12-15-2005, 09:29 AM | #11 |
Scooby Newbie
Member#: 82247
Join Date: Mar 2005
Location: NE Ohio
Vehicle:2005 Saab 9.2x Aero satin grey |
Not sure about Subies; do they have air mixing doors in addition to a water valve for the heater? Maybe those doors aren't holding their proper position; moving around??
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12-18-2005, 10:26 PM | #12 |
Scooby Newbie
Member#: 100817
Join Date: Nov 2005
Location: upstate new york
Vehicle:2004 subaru Blue |
i have the same exact problem
i have the same exact problem (04 wrx )
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