Welcome to the North American Subaru Impreza Owners Club Wednesday June 1, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 10-15-2007, 03:18 AM   #1
AntiochCali
Scooby Specialist
 
Member#: 30185
Join Date: Nov 2002
Location: Antioch, California
Vehicle:
2003 320 whp
on a heatbreaker dyno

Default Overheating

I'm overheating regularly. No leaks, no milky oil, no oily water.

But I lose about 2 qts when i drive 50 miles, not likely to overheat for at least 30 mins of driving or more. then the needle will start to rise up, go all the way to the top and sometimes come back down on it's own and sometimes stay up there - in which case I stop, refill with water....etc.

Coolent system is pressurized - may have air in it, but I'm losing so much water...I just don't know where. I don't see puddles and stains on my driveway. Wondering if it can be lost through the turbo or if it is a HG leak (I expected oil in the water if that is the case and not to lose so much water).

Obeservation: The overflow tank is nearly full but the engine fill tank is down at least 10 oz. No boiling into the overflow tank.

The only thing I can think of is that perhaps the water pump is leaking, cracked casing etc.

Ideas anyone?
* Registered users of the site do not see these ads.
AntiochCali is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 10-15-2007, 07:52 AM   #2
hotrod
Scooby Specialist
 
Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
Vehicle:
2002 Impreza WRX

Default

Burp the air out of the system (several times) and the problem will likely go away.

You probably have huge bubbles captured in the cooling system by now so it will take a concerted effort to get it all out.

Your symptoms exactly discribe what happens on a subie when it has air in the system.
Larry
hotrod is offline   Reply With Quote
Old 10-15-2007, 07:55 AM   #3
Rokkit
Scooby Specialist
 
Member#: 84181
Join Date: Mar 2005
Chapter/Region: NESIC
Location: CT
Vehicle:
NASA #530 GTS2

Default

Just out of curiosity... Are your radiator fans coming on? I had an incident which lead to me blowing both radiator fan fuses which caused a "hot" condition. I just replaced them and poof all gone!

Mike
Rokkit is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
My STI is overheating when the AC is on and the AC fan doesnt work, why overheating? nicksamba_18 Service & Maintenance 1 03-09-2015 09:55 PM
Engine Overheating Issues... MrWicked Service & Maintenance 1 06-04-2010 12:23 AM
My STI is overheating when the AC is on and the AC fan doesnt work, why overheating? nicksamba_18 Off-Topic 9 08-21-2009 07:37 PM
('93-'01) Overheating Problem.... Help! (kinda long) but important SubaTubaru Impreza Forum 15 05-27-2001 03:34 AM
Overheating Peter Hadfield Legacy Forum 3 09-09-2000 02:34 PM

All times are GMT -4. The time now is 04:26 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.