Jump to content
Ultimate Subaru Message Board

Thermostat


Recommended Posts

they are cheap and easy to replace so you could install a new one. and yes your t-stat could be causing this problem. not an issue now but if it is indeed your tstat then it could eventually end up in the closed position instead of open (causing no heat) and this would overheat your motor. not worth the risk in my oppinion.

 

if you want to test it, pull it out (with the engine cold!). with the engine cold the t-stat should be closed, so all you have to do to test it is look at it. if it's open at all then it is not working properly as it should be closed at room temperature. the tstat remains closed until the engine warms to whatever temperature the t-stat is rated for, then the t-stat opens to cool the motor. if it's constantly open (or you don't have a tstat at all) then the coolant keeps flowing and the engine never really gets hot, neither does the coolant, neither does the heat and neither do you. so if you take it out and it's open, it's causing your no heat problem. you can also plop it in a pot of water on the stove and heat it up to see if it opens all the way up at it's rated temp. but if yours is stuck open then you don't need to do that.

 

if the t-stat appears fine then youll want to pull both heater core hoses and run a garden hose through one side to blow out any trash accumulated in the lines to/through the heater core.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...