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
- - - - -

85 GL heater stopped working

heater gl coolant thermostat freezing

  • Please log in to reply
7 replies to this topic

#1 noahkanzig

noahkanzig

    Member

  • Members
  • PipPip
  • 11 posts
  • Fort Collins, CO

Posted 06 December 2013 - 01:54 PM

Hello, 

 

     First time posting. I have looked around quite extensively but have not been able to pinpoint a similar topic. I have a 1985 GL wagon that runs great. Everything was working great until two days ago. I had not driven it for a week and a half because I was out of town. The temperature hear in Colorado was below 20 and as low as -10 for most of this time. Now once it gets warmed up to operating temp the heater does not work. The hoses going into the heater core are not particularly warm and when I squeeze them there doesn't seem to be anything in them. It will also start to over heat but then go back to normal temp occasionally. I checked coolant level and filled to maximum. Has anyone else experienced this or have any insight? I plan on getting a block heater soon but have a feeling that won't change much except for ease of starting. Any help is appreciated. Thanks, Noah.



#2 MilesFox

MilesFox

    Catch this Fox!

  • Members
  • 10,351 posts
  • Madison/Milwaukee, WI

Posted 06 December 2013 - 02:38 PM

Sounds like low coolant. Check the coolant when the car is warm and the heat is cold. The thermostat must be open to allow you to fill the coolant completely and burp out the air bubbles. Try filling the block by the upper radiator hose. 

 

Also, observe if there are bubbles coming out of the radiator or overflow tank while running, as this could be a sigh nof failing head gaskets where exhaust gas is pushed into the radiator forcing coolant out of the overflow.



#3 noahkanzig

noahkanzig

    Member

  • Members
  • PipPip
  • 11 posts
  • Fort Collins, CO

Posted 06 December 2013 - 06:18 PM

I was able to get more coolant in that way. Thanks! No bubble thankfully! It also starts really rough in the cold. Besides a block heater, any suggestions that would help starting on those -10 degree days?



#4 SmashedGlass

SmashedGlass

    Eat, Live, Breath Subaru

  • Members
  • 664 posts
  • From CO, stuck in FL

Posted 06 December 2013 - 06:28 PM

What weight of oil is in it right now? You should run 5W30 when it's going to be consistently below freezing for a good while.



#5 MilesFox

MilesFox

    Catch this Fox!

  • Members
  • 10,351 posts
  • Madison/Milwaukee, WI

Posted 06 December 2013 - 08:19 PM

Now that the coolant is full, be on the lookout for leaks. Perhaps you had a leak that leaked out enough to stop, causing low coolant. One thing to suspect is the skinny hose between the thermostat and the top of the block. Just a suggestion, it is as likely as is not likely. 



#6 noahkanzig

noahkanzig

    Member

  • Members
  • PipPip
  • 11 posts
  • Fort Collins, CO

Posted 06 December 2013 - 08:48 PM

I am planning on changing the oil tomorrow. Running 10W-30 right now will make the change though. I will check around for leaks. Thanks guys.



#7 SmashedGlass

SmashedGlass

    Eat, Live, Breath Subaru

  • Members
  • 664 posts
  • From CO, stuck in FL

Posted 07 December 2013 - 12:07 AM

Good luck on that oil change; isn't your high in Colorado for tomorrow a single digit number?  :P



#8 noahkanzig

noahkanzig

    Member

  • Members
  • PipPip
  • 11 posts
  • Fort Collins, CO

Posted 07 December 2013 - 06:57 PM

Yessir, haha just finished changing it actually. Did the diffs while I was at it. Fingers are hurting a little bit. 0 degrees in Fort Collins.







Also tagged with one or more of these keywords: heater, gl, coolant, thermostat, freezing

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users