Welcome to the North American Subaru Impreza Owners Club Tuesday September 16, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain

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 07-09-2012, 01:50 PM   #26
rxfuel
Scooby Newbie
 
Member#: 261704
Join Date: Oct 2010
Chapter/Region: MAIC
Vehicle:
2013 Evolution
Black Pearl

Default

Quote:
Originally Posted by donkey_cart View Post
I have the exact same issue in my '11 except with an added bonus; the car will idle rough and try to stall. It will usually happen when coming to a stop after exiting the freeway or moving at constant speed for a few minutes. My coolant levels are fine too.

The car also has a surging/ bucking problem at light throttle. Neither have been resolved. ;[
I have these same symptoms as well, taking mine in on Thursday to get looked at
* Registered users of the site do not see these ads.
rxfuel is offline   Reply With Quote
Old 07-09-2012, 02:20 PM   #27
JonzFaSTi
Scooby Specialist
 
Member#: 85575
Join Date: Apr 2005
Chapter/Region: SCIC
Location: Orange County, CA
Vehicle:
2013 STi
Dark Gray Metallic

Default

Quote:
Originally Posted by jarredkoerber View Post
im not under warranty and i am modded perrin tbe, grimmspeed uppipe tail ewg, process west top mount, ebcs, forge bpv and custome tune 280whp. i have only noticed the problem the past 6 months or so at around 20000. no one seems to know a definite fix yet... lame
FYI you still have a warranty on your car if you are within the milage/age for the car.

Now if they feel your mods created this problem they might deny your claim but just because you have mods doesnt mean you are not under warranty anymore.

If your stock radio stopped working would that not be covered under warranty because you have a TBE?

If this is a problem that has nothing to do with your mods then they shouldnt have an issue covering it under warranty.
JonzFaSTi is offline   Reply With Quote
Old 07-09-2012, 06:58 PM   #28
Confucius37
Scooby Newbie
 
Member#: 291094
Join Date: Aug 2011
Chapter/Region: SCIC
Vehicle:
2011 WRX
SWP

Default

I have a 2011 WRX with 18k on it. For the first 12-15k miles the temp gauge was always dead in the middle under normal driving conditions (street and highway). Now for the past 3-5k miles it is consistently sitting just above the middle mark under the same driving conditions. The needle will settle back to the middle position when idling at a stop light.

The coolant level is about 3/4 of the way to max.

I'm not too concerned but I'd like to know if my car is slowly losing coolant or what might cause the temp to rise under the same driving conditions.

My car is stock except for some bushings and swaybars.

Last edited by Confucius37; 07-10-2012 at 10:34 AM.
Confucius37 is offline   Reply With Quote
Old 07-10-2012, 02:09 AM   #29
suBooneru
Scooby Newbie
 
Member#: 104901
Join Date: Jan 2006
Chapter/Region: BAIC
Location: Sebastopol, Ca.
Vehicle:
2014 Forester XT
White

Default

I've noticed that my 2012 wrx temp needle vary's by almost one notch from slightly above the middle mark down to halfway between the next mark below. Seems kind of weird to me since my 2006 wrx was pretty much always dead center after being warmed up and never flucuated.
suBooneru is offline   Reply With Quote
Old 07-10-2012, 08:33 AM   #30
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

Quote:
Originally Posted by suBooneru View Post
I've noticed that my 2012 wrx temp needle vary's by almost one notch from slightly above the middle mark down to halfway between the next mark below. Seems kind of weird to me since my 2006 wrx was pretty much always dead center after being warmed up and never flucuated.
That's pretty much what mine does. Check out post #16.
bicycle_wreck is offline   Reply With Quote
Old 07-10-2012, 09:11 AM   #31
MortySnerd
Scooby Newbie
 
Member#: 267442
Join Date: Dec 2010
Chapter/Region: MAIC
Location: Chantilly, VA
Vehicle:
2011 WRX
Dark Gray Metallic

Default

Still having the same problem here, almost a year later.... I am under warranty, and I've had THREE visits to try to fix this, they simply can't find the source, and they tell me that since there's no CEL on, there's nothing to worry about and nothing more they can do. Got too tired of fighting it, but I'm planning on doing a 4th visit in a few weeks as I only have 2,000 miles of warranty left....
MortySnerd is offline   Reply With Quote
Old 07-10-2012, 11:02 AM   #32
UK-Wagon
Scooby Specialist
 
Member#: 232430
Join Date: Dec 2009
Chapter/Region: SCIC
Location: On the Left side
Vehicle:
555 XTi
1 AW & 1 CGM

Default

Quote:
Originally Posted by MortySnerd View Post
Still having the same problem here, almost a year later.... I am under warranty, and I've had THREE visits to try to fix this, they simply can't find the source, and they tell me that since there's no CEL on, there's nothing to worry about and nothing more they can do. Got too tired of fighting it, but I'm planning on doing a 4th visit in a few weeks as I only have 2,000 miles of warranty left....
Yes, please guys. If youre car is under warranty this should be youre first place to have it diagnosed. You can always post up problems with youre cars and relay to other member what the repair was. Some of these threads about bran new cars are just ridiculous, take it back and have it looked at. Dont rely on the forums to fix youre new car that has a damn warranty.

Now with that said, Im surprised they said there is nothing they can do. If the tech called Subaru tech line or his field service engineer they could help you and the tech. They will usually authorize the replacement of some sort of part (s). Until it is fixed so they can find a solution to this problem as it may become more prevalent. With what they told you, the tech is being lazy..... and doesnt want to deal with it. Call a different dealer or SOA, if you call SOA and really bitch about it they will make sure someone who knows what they are doing gets to it. Here is the other thing, you have 2k miles left of warranty, but because this was an existing problem that has never been fixed there is an acception to the rule here. They should continue to warranty parts related to the issue because it is "on going". Dont wait 8 months for them to fix it, but keep going to them often till it is fixed. Just simply demand it gets fixed, leave it there till it is fixed and tell them its going to stay there till it is.
UK-Wagon is offline   Reply With Quote
Old 07-12-2012, 12:24 PM   #33
rxfuel
Scooby Newbie
 
Member#: 261704
Join Date: Oct 2010
Chapter/Region: MAIC
Vehicle:
2013 Evolution
Black Pearl

Default

Update, took my car in and after they did some looking around about the temp gauge they found the head gasket had a leak, so they have to replace the head gasket. Just glad they found it, explains all the problems I've been having.
rxfuel is offline   Reply With Quote
Old 07-12-2012, 12:48 PM   #34
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

If you could scan and post the work order, that would be helpful.

I would be interested to know how they found the gasket leak and whether it was internal or external. My block is bone dry on the outside and I don't lose coolant.

After they replaced my water pump and that fixed nothing, I am skeptical.
bicycle_wreck is offline   Reply With Quote
Old 07-12-2012, 03:36 PM   #35
rxfuel
Scooby Newbie
 
Member#: 261704
Join Date: Oct 2010
Chapter/Region: MAIC
Vehicle:
2013 Evolution
Black Pearl

Default

Quote:
Originally Posted by bicycle_wreck View Post
If you could scan and post the work order, that would be helpful.

I would be interested to know how they found the gasket leak and whether it was internal or external. My block is bone dry on the outside and I don't lose coolant.

After they replaced my water pump and that fixed nothing, I am skeptical.
Yea I can do that, they said the car should be ready tomorrow afternoon since I got it to them so early this morning and they had the parts on hand.

I had filled up my coolant about a week or two ago since it looked a bit low then when I brought it in today and it cooled down the level looked a little lower than when I filled it, I told the tech that and he took it and came back saying he saw bubbles coming out of the coolant which showed a small leak.

Ill post more tomorrow when I get the car back and look over what they found, hopefully it was just the gasket but they said it could be more.
rxfuel is offline   Reply With Quote
Old 07-12-2012, 04:12 PM   #36
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

Quote:
Originally Posted by rxfuel View Post
Yea I can do that, they said the car should be ready tomorrow afternoon since I got it to them so early this morning and they had the parts on hand.

I had filled up my coolant about a week or two ago since it looked a bit low then when I brought it in today and it cooled down the level looked a little lower than when I filled it, I told the tech that and he took it and came back saying he saw bubbles coming out of the coolant which showed a small leak.

Ill post more tomorrow when I get the car back and look over what they found, hopefully it was just the gasket but they said it could be more.
How much was your temperature gauge fluctuating? Also, were the bubbles in the overflow or in the turbo coolant reservoir?
bicycle_wreck is offline   Reply With Quote
Old 07-15-2012, 01:03 AM   #37
rxfuel
Scooby Newbie
 
Member#: 261704
Join Date: Oct 2010
Chapter/Region: MAIC
Vehicle:
2013 Evolution
Black Pearl

Default

it was fluctuating a good amount, but only in between shifting then it would level back out. Dealership sent the heads out, hopefully they determine what the root cause was.
rxfuel is offline   Reply With Quote
Old 07-15-2012, 09:33 PM   #38
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

Quote:
Originally Posted by rxfuel View Post
it was fluctuating a good amount, but only in between shifting then it would level back out. Dealership sent the heads out, hopefully they determine what the root cause was.
How much is a 'good amount'? How many bars is it moving? Does it fluctuate up or down from the middle mark?
bicycle_wreck is offline   Reply With Quote
Old 07-15-2012, 10:41 PM   #39
rxfuel
Scooby Newbie
 
Member#: 261704
Join Date: Oct 2010
Chapter/Region: MAIC
Vehicle:
2013 Evolution
Black Pearl

Default

It was dipping down between 2 bars and 5 bars sometimes, never saw the temp go above half.
rxfuel is offline   Reply With Quote
Old 07-20-2012, 11:10 AM   #40
rxfuel
Scooby Newbie
 
Member#: 261704
Join Date: Oct 2010
Chapter/Region: MAIC
Vehicle:
2013 Evolution
Black Pearl

Default

Update got the car back a day ago, work order states there were a lot of parts replaced, the description page states

Customer states that there is a rough idle. usually bogs down from 2000-25000 RPMS. States temp gauge fluctuates. Confirmed customer concern found vehicle overheating found hydrocarbons in coolant. Removed both heads found both gaskets leaking internally and heads out of spec. Replaced both cylinder head gaskets and all related items. sent to machine shop for resurfacing.

Looks like they also replaced the thermostat and thermostat gasket. I will try and load the parts page up to show all the parts replaced. So far the car feels better, idle is stronger, temp gauge hasn't shown any fluctuation. But the whole issue is concerning that after 30k miles an issue this severe occured. I don't abuse my car at all, my only real mods are a short throw with bushings and spt exhaust, check and change my fluids regularly. Just a little unusual to happen in a car with this low miles with no prior problems.
rxfuel is offline   Reply With Quote
Old 07-20-2012, 11:22 AM   #41
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

Thanks for reporting back. Please let us know if the temp gauge fluctuates any more. Sorry to hear about all the trouble.

I have a sneaking suspicion that the thermostat is responsible for the gauge. Just my theory, though.
bicycle_wreck is offline   Reply With Quote
Old 07-20-2012, 11:37 AM   #42
rxfuel
Scooby Newbie
 
Member#: 261704
Join Date: Oct 2010
Chapter/Region: MAIC
Vehicle:
2013 Evolution
Black Pearl

Default

Quote:
Originally Posted by bicycle_wreck View Post
Thanks for reporting back. Please let us know if the temp gauge fluctuates any more. Sorry to hear about all the trouble.

I have a sneaking suspicion that the thermostat is responsible for the gauge. Just my theory, though.
Yea that was my initial thought, I've had enough cars have small issues with the thermostat or the sending unit. But I was thrown back when they said the head gasket.
rxfuel is offline   Reply With Quote
Old 07-20-2012, 11:44 AM   #43
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

Well, hopefully you got it sorted. Thank you for keeping us up-to-date on the problem. There are many issues mentioned in threads like this one, all over this forum, that just end without further explanation or update.

Looking forward to seeing the work order so I can take it to my dealer. Don't forget to redact your personal info. Thanks again.
bicycle_wreck is offline   Reply With Quote
Old 07-21-2012, 09:15 AM   #44
MortySnerd
Scooby Newbie
 
Member#: 267442
Join Date: Dec 2010
Chapter/Region: MAIC
Location: Chantilly, VA
Vehicle:
2011 WRX
Dark Gray Metallic

Default Possible Solution Found

All,

I am out of town right now, (with my car dropped off before I left) so I can't confirm any of this myself yet, but my dealership claims a solution has been found.

This is my third trip to the dealer for the temp gauge needle problem. Once again they confirmed it themselves that it was happening, but this time they say I'm not the only person whose been in for this issue. In fact, they now have an official Subaru publication on the issue, which says it's due to loose wires in the engine bay.

True or not, at any rate they say they applied the fix in the publication, and now claim that on subsequent test drives they now no longer see the problem. They seemed a lot more confident this time than in the previous trips, where they replaced thermostats or did coolant flushes, and kind of shrugged and said "Hopefully that's it...." (which it wasn't)

The fact that they claim there's an official Subaru bulletin on this now is good news. Hopefully it's the reason some of us are having this problem.

I get home on the 27th, I'll drive around myself and report back!
MortySnerd is offline   Reply With Quote
Old 07-21-2012, 11:54 AM   #45
JasonC
Scooby Newbie
 
Member#: 170245
Join Date: Jan 2008
Chapter/Region: South East
Location: Greenville, SC
Vehicle:
'11 WRX Sedan
SSM

Thumbs up

^^^
This is great news Mike.

Sorry I have not posted, but I did take my car in a couple months ago and 2 SOA techs were brought in to see what was going on with my car.

I know for sure they reflashed my ECU, but they really won't tell me what else they did - but whatever they did has solved my issues as well. I've logged around 3,000 miles and not 1 issue of the needle dropping/hesitation.

It was extremely annoying....and now that my car is fixed I am in love all over again. Can't wait to see/read the TSB, I knew all of us weren't crazy!!
JasonC is offline   Reply With Quote
Old 08-01-2012, 10:09 AM   #46
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

Any update, Morty?
bicycle_wreck is offline   Reply With Quote
Old 08-02-2012, 08:21 AM   #47
MortySnerd
Scooby Newbie
 
Member#: 267442
Join Date: Dec 2010
Chapter/Region: MAIC
Location: Chantilly, VA
Vehicle:
2011 WRX
Dark Gray Metallic

Default

Hey guys! Sorry for the delay. Yes, they do appear to have fixed it! The overall behavior now is still a little different than the day I bought it, but the fluctuation is gone. Now, my needle warms up in bursts... I'll see it make brisk moves of about 1/4th a notch every few seconds, until it reaches about 95% of normal. Then, it will stay at about 95% for a good 5-10 minutes... why, I don't know... until it reaches 100% of normal. Once there, it stays there completely. I haven't seen one movement at all.

The reasons for the not-perfectly-linear warm-up cycle could be many. I've had several coolant flushes, a few thermostat replacements, and my current coolant has come from a tuner shop and may not be exactly what Subaru's computers are expecting. (I thought maybe a third party could have found something Subaru didn't....) But the fluctuations are gone.

My service paper says the following (Paraphrased) "Performed wiggle test on the main engine harness while observing ECT sensor and was able to duplicate the fluctuation. Technician determined the issue to be ECT signal wire connector B21 & E2, Pin 12 disassembled, connectors checked for sliding resistance and resoldered and crimped. Retest shows ECT now steady."
MortySnerd is offline   Reply With Quote
Old 08-06-2012, 04:08 PM   #48
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

Thanks for posting that, Morty. Was there any TSB number or anything attached to your work order? Would it be possible for you to scan it and post it here? Thank you!
bicycle_wreck is offline   Reply With Quote
Old 08-22-2012, 09:56 PM   #49
bicycle_wreck
Scooby Newbie
 
Member#: 226331
Join Date: Oct 2009
Chapter/Region: South East
Location: Knoxville, TN
Vehicle:
2012 WRX Hatch
Dirty Smurf

Default

Taking my car in tomorrow for the fluctuating temperature gauge again.

Description:
My car will warm up to one notch below the middle mark in about 5 minutes. After that, it will only reach the middle mark if I come to a stop. After it reaches slightly above the middle mark (usually at an intersection), it stays there unless I drive above 50mph for a few minutes or coast down a hill in 4th or 5th gear. Then the gauge will drop as much as 1 full notch depending on the length and grade of the hill. The gauge will then rise back above the middle notch next time I come to a stop.

If I am running the A/C, this is far less likely to happen for whatever reason, and the gauge will usually stay on the middle mark. I mostly notice the fluctuation when the A/C is off.
bicycle_wreck is offline   Reply With Quote
Old 08-23-2012, 06:14 AM   #50
MortySnerd
Scooby Newbie
 
Member#: 267442
Join Date: Dec 2010
Chapter/Region: MAIC
Location: Chantilly, VA
Vehicle:
2011 WRX
Dark Gray Metallic

Default

All,

Just a bit of bad news - after having been totally fixed for several weeks - the longest I'd ever seen it not move at all since it started being a problem - it slowly but surely started moving again. It's not nearly as bad as it was before, but it's definitely doing funky stuff again.

I wonder if maybe the solder they use for the wiring harness is substandard and getting melted slowly by engine heat?
MortySnerd 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
2011 wrx 5 mt problems? mstkenny04 Transmission (AT/MT) & Driveline 11 03-08-2013 07:01 PM
2011 WRX Front Bumper Problem. Help! BurnsideREX Newbies & FAQs 3 12-09-2011 06:06 PM
2011 WRX Fuel Pump Problem? HELP PLEASE aTriz Factory 2.5L Turbo Powertrain 2 11-11-2011 10:11 PM
2011 WRX Hatch elevated engine temperature DRTiraPiedra General Community 14 07-25-2011 12:18 PM
When the temperature needle moves, is it OK to start driving? pha qed Newbies & FAQs 13 05-05-2004 10:05 PM


All times are GMT -4. The time now is 12:33 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.