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01-05-2012, 03:35 PM | #1 |
*** Banned ***
Member#: 15571
Join Date: Feb 2002
Location: Not where you think
Vehicle:2006 06 Forester XT Silver |
Blown gasket or thermostat or something else?
The last few days I have noticed that my cabin heat is inconsistent. Sometimes it blows warm air and sometimes it blows cold air, even when its on the highest heat setting. Even when I set it that high, the air that comes out is only mildly warm and it seems to go back to blowing cold air within a couple minutes.
Just yesterday I noticed my eng temp gauge being very active. After it warms up, the gauge can bounce between halfway and all the way up to almost overheating. It jumped all the way up while I was going down a slight hill with the clutch engaged, just coasting. It moves quickly up and down, unlike I've ever seen. Bad thermostat? Head gasket? I haven't checked under the hood yet for gasket issues, but I will when I go to leave soon.
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01-05-2012, 03:43 PM | #2 |
Scooby Specialist
Member#: 244231
Join Date: Apr 2010
Chapter/Region:
NESIC
Location: Providence, RI, USA
Vehicle:2018 Crosstrek CVT DGM |
Check the coolant level and see if it is full.
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01-05-2012, 06:02 PM | #3 |
Former Vendor
Member#: 305489
Join Date: Dec 2011
Chapter/Region:
Tri-State
Location: CT
Vehicle:91 skyline GTR champ white |
Sounds like the thermostat has gone on you.
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01-06-2012, 10:21 AM | #4 |
*** Banned ***
Member#: 15571
Join Date: Feb 2002
Location: Not where you think
Vehicle:2006 06 Forester XT Silver |
I checked the coolant level and it was down. I topped it off near work and drove home. While driving home, I saw some unusual activity on the eng temp gauge. Usually once the car warms up that gauge doesn't move, but it was pushing higher and higher as I coasted down a couple hills.
This morning I checked and the coolant level was down again. I topped it off again and drove to work (8 miles). I'll check at lunch. Oil isn't milky and looks fine so I don't think the coolant is leaking there. There wasn't any puddle under my car either. |
01-06-2012, 08:13 PM | #5 |
Scooby Newbie
Member#: 303613
Join Date: Dec 2011
Chapter/Region:
Tri-State
Vehicle:02 WRX AW |
Having the exact same issue in my Wrx! I changed my thermostat and it didn't fix it. Very curious to see what your outcome is
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01-07-2012, 09:07 PM | #6 |
*** Banned ***
Member#: 15571
Join Date: Feb 2002
Location: Not where you think
Vehicle:2006 06 Forester XT Silver |
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01-07-2012, 10:54 PM | #7 |
Scooby Newbie
Member#: 303613
Join Date: Dec 2011
Chapter/Region:
Tri-State
Vehicle:02 WRX AW |
I've had it for the last 5 days. I've been topping off almost everyday. It would take all the coolant from the expansion tank. No smoke, no misfire, just intermittent heat loss and sucking coolant
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01-07-2012, 11:18 PM | #8 | |
*** Banned ***
Member#: 15571
Join Date: Feb 2002
Location: Not where you think
Vehicle:2006 06 Forester XT Silver |
Quote:
I'd really like to know what the heck is going on. 06 Forester 2.5xt with 62k miles on it. I wouldn't think I'd blow a head gasket, although if that was where our coolant was going, we'd see it in the oil I would presume. My oil is fine. |
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01-08-2012, 08:15 AM | #9 |
Scooby Newbie
Member#: 303613
Join Date: Dec 2011
Chapter/Region:
Tri-State
Vehicle:02 WRX AW |
Same here. I'd hate to jinx myself but mine seems to have
stabalized too and yes it was around 65 degrees here too so no need for heat. I sat in my driveway with a scan tool hooked up and watched the coolant temp after a 30 minute trip and it maxed out at 208 degrees with the heat on. The needle was around halfway |
01-13-2012, 01:55 PM | #10 |
Scooby Newbie
Member#: 301296
Join Date: Nov 2011
Chapter/Region:
SCIC
Location: los angeles
Vehicle:2008 wrx SS |
do either of you smell coolant? in the car while driving, or outside after a long drive?
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01-13-2012, 02:09 PM | #11 |
*** Banned ***
Member#: 15571
Join Date: Feb 2002
Location: Not where you think
Vehicle:2006 06 Forester XT Silver |
No coolant smell ever that I am aware of. Although I've been stuffed up for a little while.
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01-24-2012, 05:07 PM | #12 |
Scooby Newbie
Member#: 289327
Join Date: Jul 2011
Chapter/Region:
SCIC
Location: Newbury Park
Vehicle:2016 Subaru WRX Ice Silver |
My 2008 WRX was having the same issue, it was finally determined to have a head gasket problem. The engine heads were removed and found to be alright. One head gasket had a leak. The engine did not pass the head pressure test, that's why it was taken apart.
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01-24-2012, 05:18 PM | #13 |
*** Banned ***
Member#: 15571
Join Date: Feb 2002
Location: Not where you think
Vehicle:2006 06 Forester XT Silver |
Oddly enough, it appears that my problem just went away. I did a 2 hour drive to AC and back this weekend and my temps were steady, heat worked. I have no idea what the heck was going on but I haven't had the problem since a week or so after I started this thread.
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01-24-2012, 05:54 PM | #14 |
ForumWars Winner!
Member#: 196948
Join Date: Dec 2008
Chapter/Region:
TXIC
Location: Kyle, TX
Vehicle:2003 Forester Silver |
Air in the cooling system.
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