Welcome to the North American Subaru Impreza Owners Club Tuesday August 21, 2018
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo)

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 04-17-2018, 12:18 AM   #1
kctqnoah
Scooby Newbie
 
Member#: 411461
Join Date: Jan 2015
Location: United States
Vehicle:
2004 Subaru WRX
Silver

Default 04 WRX Overheating Concern?

Hey all! I was hoping somebody could give me some peace of mind here. Im assuming I am fine but I tend to over think things and would like a second opinion. All is appreciated!

So a week ago I was driving my 04 wrx to my buddies house when I started to notice a little white smoke up front at a stop sign. I didnt think too much of it but I was keeping an eye on my coolant gauge. I should also clarify first I live in NH and it was about 25 degrees this day. Well after about another minute of driving I notice the coolant temp starting to slowly go up. My buddies street was probably another 1/4 mile down the road so I decided to wait to get to hit road to pull over as I was on a pretty busy main road.

When im approaching his road my temp gauge is just starting to get out of its normal marked zone, however his road is very steep at the start and when I went up the incline my temp gauge started climbing FAST. This freaked me out and I pulled over before it got too high but the gauge probably got about 3/4 of the way up. For sure not in the red zone but a little bit under it. Im not sure if being low/empty on coolant caused the thermostat to freak out when I went up the incline? If someone could clarify that it would be appreciated

Opened my hood and there was coolant pissed all over my engine, to which my friend and I believe is a crack in the stock radiator (car has 160k on body). I let the car cool back down for about 30-40 mins, but since I was on a steep incline on this road and needed AAA to tow my car I needed to get back out onto this main road. I coasted to the bottom of the hill and started to drive the car again driving slow at 15mph watching the gauge, got about 1/2 a mile before the gauge started to rise again out of its normal zone and thats when I pulled over for good and called AAA.

I guess my question is do you think I could have ****ed up my heads/head gasket/engine components or damaged other things from this? The gauge did not reach into the red zone although it got pretty high to about 3/4 of the way up. I checked the coolant fill points in both reservoirs the next day and they were both pretty much completely dry. Im worried that I may have damaged something from driving it back onto the main road after noticing the leak, because I probably had little to no coolant in the system. I did start the car up for just a second and the engine sounded normal as it always does, although I doubt you could tell anything by noise. Car is in good shape otherwise, had heads resurfaced/valve job and headgaskets at 100k. Would appreciate some opinions on this. Sorry for my rant! Cheers
* Registered users of the site do not see these ads.
kctqnoah is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 04-17-2018, 12:47 PM   #2
mrsaturn7085
Scooby Specialist
 
Member#: 375462
Join Date: Dec 2013
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
2006 Impreza WRX STI
WR Blue

Default

Fix the issue and see if you lose coolant. How much did you need to add? The temperature sensor is the highest point in the system (or pretty close to it), it will overheat LONG before the engine is in serious trouble.

Could you have damaged something? Sure. Everyone on here will be guessing if they tell you that you did, or did not cause damage, however.
mrsaturn7085 is offline   Reply With Quote
Old 04-17-2018, 02:06 PM   #3
berge56
Scooby Specialist
 
Member#: 56754
Join Date: Mar 2004
Chapter/Region: NESIC
Location: Mass
Vehicle:
2004 Hybrid 2.5XTR
RIP [email protected]

Default

What they said ^.

Replace the radiator, burp the cooling system and see if you lose coolant or overheat.

My guess is that you are fine.
berge56 is offline   Reply With Quote
Old 04-17-2018, 06:57 PM   #4
kctqnoah
Scooby Newbie
 
Member#: 411461
Join Date: Jan 2015
Location: United States
Vehicle:
2004 Subaru WRX
Silver

Default

Quote:
Originally Posted by mrsaturn7085 View Post
Fix the issue and see if you lose coolant. How much did you need to add? The temperature sensor is the highest point in the system (or pretty close to it), it will overheat LONG before the engine is in serious trouble.

Could you have damaged something? Sure. Everyone on here will be guessing if they tell you that you did, or did not cause damage, however.

Thank you for the info. I'm gonna be replacing the radiator with a Koyo and replacing some of the smaller coolant lines. When you say the sensor will overheat before the engine is in serious harm, are you talking about the temp gauge rising in the car? Will the sensor itself be damaged from reading that high of a temp out of its normal range?
kctqnoah is offline   Reply With Quote
Old 04-17-2018, 07:07 PM   #5
White_Wagon_
Scooby Newbie
 
Member#: 457564
Join Date: Nov 2016
Chapter/Region: SCIC
Location: Palmdale, C.A.
Vehicle:
2006 Wrx Wagon
Aspen White

Default

I think you should be fine as long as you didnít do any kind of serious driving or pulls without coolant. I had a cracked radiator once and i ran into that problem you did going up hill. Nothing serious though as the guage rose above normal temps for about 30secs or so. So I think you should be good. But as the others said, replace the radiator burp the system and see from there. Also I would replace the thermostat just for safe measure. Just a couple more dollars with the gasket wonít hurt.

Last edited by White_Wagon_; 04-17-2018 at 07:08 PM. Reason: Spelling.
White_Wagon_ is offline   Reply With Quote
Old 04-17-2018, 07:10 PM   #6
mrsaturn7085
Scooby Specialist
 
Member#: 375462
Join Date: Dec 2013
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
2006 Impreza WRX STI
WR Blue

Default

I'd recommend the Koyo stock replacement rather than the aluminum one. Regardless of whether you have a 5MT or 4AT, buy the auto transmission version. You'll have an extra pre-plumbed cooling circuit at the bottom of the radiator that you can cap off if you don't use it, but if you need it for anything, it'll be right there for you.

The sensor will not be damaged - once the coolant falls below the level of the sensor, the sensor is reading the temperature of the steam above the coolant level. This is why the needle moves so fast in the car when you overheat - when you're reading the temperature of a gas rather than a liquid, the temperature quickly spikes.
mrsaturn7085 is offline   Reply With Quote
Old 04-17-2018, 07:22 PM   #7
kctqnoah
Scooby Newbie
 
Member#: 411461
Join Date: Jan 2015
Location: United States
Vehicle:
2004 Subaru WRX
Silver

Default

Quote:
Originally Posted by mrsaturn7085 View Post
I'd recommend the Koyo stock replacement rather than the aluminum one. Regardless of whether you have a 5MT or 4AT, buy the auto transmission version. You'll have an extra pre-plumbed cooling circuit at the bottom of the radiator that you can cap off if you don't use it, but if you need it for anything, it'll be right there for you.

The sensor will not be damaged - once the coolant falls below the level of the sensor, the sensor is reading the temperature of the steam above the coolant level. This is why the needle moves so fast in the car when you overheat - when you're reading the temperature of a gas rather than a liquid, the temperature quickly spikes.

Great thank you for clarifying Why would you recommend the Koyo OEM replacement vs the aluminum? Ive had people tell me the aluminum is much better and that the Koyo OEM replacement will still crack eventually because of the design. Granted my car is still mostly stock, td04 with turbo back, fuel pump, intake, pro tune
kctqnoah is offline   Reply With Quote
Old 04-17-2018, 07:27 PM   #8
kctqnoah
Scooby Newbie
 
Member#: 411461
Join Date: Jan 2015
Location: United States
Vehicle:
2004 Subaru WRX
Silver

Default

Quote:
Originally Posted by White_Wagon_ View Post
I think you should be fine as long as you didnít do any kind of serious driving or pulls without coolant. I had a cracked radiator once and i ran into that problem you did going up hill. Nothing serious though as the guage rose above normal temps for about 30secs or so. So I think you should be good. But as the others said, replace the radiator burp the system and see from there. Also I would replace the thermostat just for safe measure. Just a couple more dollars with the gasket wonít hurt.
Definitely no pulls or anything while this happened. This is good to hear, I appreciate the insight!
kctqnoah is offline   Reply With Quote
Old 04-20-2018, 12:18 AM   #9
subaru_gc8
Scooby Specialist
 
Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

Default

why do you think its a crack in the radiator, usually come uncrimped. especially whey you start to push more power
subaru_gc8 is offline   Reply With Quote
Old 04-24-2018, 10:57 AM   #10
MrJesse34
Scooby Newbie
 
Member#: 485093
Join Date: Apr 2018
Default

+1 for your coolant hose becoming disconnected. My lower one popped off suddenly on my 05 WRX with 140k.
MrJesse34 is offline   Reply With Quote
Old 05-09-2018, 01:57 PM   #11
ping_freud
Scooby Newbie
 
Member#: 485761
Join Date: May 2018
Default

Quote:
Originally Posted by mrsaturn7085 View Post
I'd recommend the Koyo stock replacement rather than the aluminum one. Regardless of whether you have a 5MT or 4AT, buy the auto transmission version. You'll have an extra pre-plumbed cooling circuit at the bottom of the radiator that you can cap off if you don't use it, but if you need it for anything, it'll be right there for you.

The sensor will not be damaged - once the coolant falls below the level of the sensor, the sensor is reading the temperature of the steam above the coolant level. This is why the needle moves so fast in the car when you overheat - when you're reading the temperature of a gas rather than a liquid, the temperature quickly spikes.
This is TWO things I did not know before, and I've been a Subaru owner/modder since 1998. Thanks!
ping_freud 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

All times are GMT -4. The time now is 09:49 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.