Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

No heat when SUPER cold outside


  • Please log in to reply
10 replies to this topic

#1 WJM

WJM

    SUBARU

  • Members
  • 7,828 posts

Posted 18 January 2005 - 07:37 PM

Ok...so the last two mornings its been about 15 out...and the car has NO HEAT even when the engine as at 'full temp' on the temp guage...along with the cold idle not going off.

After the car sits...and I warm it up again, it has heat and idles properly...but by then its closer to 30 outside, and its the middle of the day.

So...any ideas on what the problem could be? Its got a 60/40 solution of the green stuff in it.

#2 MorganM

MorganM

    Do you Subaru?

  • Members
  • 8,390 posts
  • TwinCities

Posted 18 January 2005 - 08:15 PM

Could try a 195 degree thermostat. This is also why you see duders with those radiator bras.... or cardboard =P I just wear mechanics gloves while driving. Not really that warm but just so you arent holding onto cold wheel and shifter. Also make sure your air circulation vent is closed to the outside air.

#3 VaporTrail

VaporTrail

    Brattitude Adjustment

  • Administrator
  • 11,149 posts
  • Central Iowa

Posted 18 January 2005 - 08:22 PM

Could try a 195 degree thermostat. This is also why you see duders with those radiator bras.... or cardboard =P I just wear mechanics gloves while driving. Not really that warm but just so you arent holding onto cold wheel and shifter. Also make sure your air circulation vent is closed to the outside air.


if the temp guage is normal, then I'd say you have limited flow through your heater core.... with all the overheating issues with ea82T's, there's no way I'd put cardboard in front of the rad.... don't want it to run any hotter than it needs to...

#4 baccaruda

baccaruda

    YOUR FAVORITE MOD

  • Moderator
  • 6,942 posts
  • SpoVegas, WA

Posted 18 January 2005 - 08:35 PM

my brat did that a few days ago when we were at -10ish. i guessed at the thermostat and/or the heater core. i put cardboard in front of the radiator (as best i could around the 3rd eye) and it did nothing. I have a new dealer thermostat (stock temp i think) and a new (CSF or modine) radiator in the car.. the heater struck me as fairly weak before this anyway. i'll probably tackle the heater core when it warms up outside...

#5 JWX

JWX

    Lonely driver

  • Members
  • 3,073 posts
  • Atlanta

Posted 18 January 2005 - 08:56 PM

mine doesn't have heat after untill about 30 mins of driving, but I figure its just teh fact that there is a ****load of "nests" in the ducting.

#6 Craven

Craven

    Just a guy with a Brat

  • Members
  • 674 posts
  • Midland

Posted 18 January 2005 - 09:46 PM

Sounds like a semi-plugged heater core. Do a back-flush and see how well it flows and if any crap comes out.

#7 badrasta

badrasta

    New User

  • Members
  • Pip
  • 6 posts
  • Toronto, Canada

Posted 18 January 2005 - 09:48 PM

WJM,

We had the exact same problem Monday on our '93 Loyale here in Toronto, Canada. Just like you, cold outside temperatures, especially with the wind chill (under 0F). I drove it all day yesterday and could bearly get any heat out of the blower in the cabin. It wasn't freezing air blowing in, but it certainly wasn't warm. More like 'cat breath' warm... good for nothin'!

When I had a chance, I checked the coolant level (low coolant level is well known in our car to cause the heater core to blow cold air) -- coolant level was perfect.

So we took it to our very trustworthy mechanic here in Markham (he's worked on all our Subarus, not a dealer) and he found it: it was the thermostat. It had probably been in there for 5+ years and I guess it was just old enough so as to open it's valve at too low a temp., and the engine never got a chance to fully warm up 'cause too much cold water was being allowed into the system from the radiator.

We've had a lot of cold days up here lately, and non of them ever caused this problem. He put in a new stock thermostat, and wholla! Problem solved.

The heater now pumps out the serious heat I've grown accustomed to expect from all our Subies, and my toes are warm once again. :) Subaru heater cores have always impressed me with the amount of heat they pump out, so I wouldn't settle for anything less than "ahhh, nice and warm!" even in the dead of winter at 0 degrees F.

Hope that helps -- get your thermostat replaced. But first, make sure your coolant level is filled up to the brim, and make sure there's no air pockets in the upper and lower rad hoses (squeeze 'em with rad cap off, and engine running -- but do it when it's cold to prevent scalding!).

Best of luck,
-badrasta

#8 WJM

WJM

    SUBARU

  • Members
  • 7,828 posts

Posted 18 January 2005 - 09:53 PM

Its got a OE 195 T-stat in it. Good rad and everything. :confused: AND its less than 1 year old too.

#9 grossgary

grossgary

    Elite Master of the Subaru

  • Members
  • 19,741 posts
  • WV

Posted 19 January 2005 - 01:27 AM

pull the hoses from the heater core and blow them out with compressed air/garden hose of water. you'll be amazed what comes out. if it's really bad, you'll need to do it to the lines prior to the heater core as well and flush it all out.

#10 americanyouth

americanyouth

    USMB is life!

  • Members
  • 128 posts
  • Tolland

Posted 19 January 2005 - 02:20 AM

Yep.... definitely sounds like plugged heater core to me.

#11 TomRhere

TomRhere

    Certified BRAT nut!!!

  • Members
  • 3,967 posts
  • Hillsdale, Mi. USA

Posted 19 January 2005 - 05:46 AM

I've had decent luck, (most of the time, but not always), in reversing the heater hoses to back-flush the core. Depends on just how much crud is in core, and orintation of core in vehicle. But it's an easy try...

T-stats can fail, regardless of Brand, or age.....

Do love the heaters in these BRATs I own!! Heats up the cabin area real nice, and fast. Takes the Dodge forever to get warmed up enough to defrost the windshield. You want "heat", better wait another 15 minutes or so. Once it's warmed up, it gives pleanty of heat though.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users