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Old 06-15-2014, 11:25 AM   #1
brianAshadow
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Default 2013 Lightweight WRX Sedan, Unsolvable Engine Issue

Stock 2013 WRX Sedan 9k miles

Issue: The engine will randomly cut out between 2750rpms-4250rpms. I can't tell if it's cutting timing, or fuel. It dies out where the engine is still running, but the throttle does very little if anything at all. Kind of like what happens when your car starts to run out of gas. It does it in any gear, at any speed, hot or cold, AC on or off, TC on or off, and there are NO lights or codes thrown. If you get out of the throttle, it idles fine. If you push in the clutch and hit the gas while its happening, it revs just fine. When I say random, its as random as it gets. It can be terrible in the morning, fine after lunch. No pattern, no direct setting or driving habit sets it off or on.

What Subaru has done: They've had it four times for a total of 16 days. They reset the ECU, re-crimped the ground wires in the engine harness, and replaced the knock sensor. A Subaru field tech has come in and looked at it, drove it with a computer hooked up, and it's still broken.

Any ideas from some internet heros here? I have two videos of the car acting up.
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Old 06-15-2014, 11:43 AM   #2
Uncle Scotty
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you need to log it while this happens...im really surprised subaru didnt do this....

you need a different dealer
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Old 06-15-2014, 11:45 AM   #3
brianAshadow
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Originally Posted by Uncle Scotty View Post
you need to log it while this happens...im really surprised subaru didnt do this....

you need a different dealer
They did. They drove it for almost 60 miles with the computer hooked up to it. I don't have the logs, but they were confident (The Subaru Field Tech and the local Master Tech) it was the knock sensor. They said it dropped to -10 while they were driving it, which i have no clue what that means. They put a new knock sensor in, and drove it for 50 miles. It's still broken however.
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Old 06-15-2014, 12:02 PM   #4
Uncle Scotty
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id sell it....today.
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Old 06-15-2014, 12:03 PM   #5
Shiftace420
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If your car is pulling timing you might look for a loose bolt or item that is rattling near the knock sensor.

This is wild shot in the dark because I cant see a log but from what your telling me it is possible to have a loose part faking out the Knock Sensor.
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Old 06-15-2014, 12:48 PM   #6
brianAshadow
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id sell it....today.

???

Two things wrong with that, 1. I prefer my model over the new WRX, 2. I couldn't in good faith pass my problems onto someone else without telling them.

I hope you were kidding...
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Old 06-15-2014, 12:49 PM   #7
brianAshadow
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Originally Posted by Shiftace420 View Post
If your car is pulling timing you might look for a loose bolt or item that is rattling near the knock sensor.

This is wild shot in the dark because I cant see a log but from what your telling me it is possible to have a loose part faking out the Knock Sensor.
I will mention that to them. Any spot in particular I should tell them to check?
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Old 06-15-2014, 01:40 PM   #8
Tripintaz
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Same symptoms that a hurt piston could exhibit.
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Old 06-15-2014, 06:09 PM   #9
Trae32566
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Quote:
Originally Posted by brianAshadow View Post

???

Two things wrong with that, 1. I prefer my model over the new WRX, 2. I couldn't in good faith pass my problems onto someone else without telling them.

I hope you were kidding...
Don't feed the trolls.
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Old 06-15-2014, 09:56 PM   #10
Uncle Scotty
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Quote:
Originally Posted by brianAshadow View Post
???

Two things wrong with that, 1. I prefer my model over the new WRX, 2. I couldn't in good faith pass my problems onto someone else without telling them.

I hope you were kidding...

d0000000000d...they been ****in with it for 16 days already......and no clue????

soa d000d loggs it using the select monitor and has no clue

its ****ed.......REALLY-REALLY ****ed

drop it like a hot rock and get another car

how much of you life are you willing to waste on this???


if YOU are not a mechanic and can not FIX the issue yourself....

SELL IT to the dealer and get another car and let THEM eat the bull**** involved
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Old 06-15-2014, 09:58 PM   #11
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Originally Posted by Trae32566 View Post
Don't feed the trolls.

and its fuc king morons like YOU who havnt the slightest clue in a cold frozen over hell who post stupid sh it straight out yer ass here

that make this board a cesspool of stupidity


piss the **** off you wortheless ****ing idiot
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Old 06-15-2014, 10:43 PM   #12
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Sounds like a fuel pressure problem. Put a fuel pressure gauge inline with the pressure-feed line from the tank and monitor it as you drive.
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Old 06-16-2014, 01:43 AM   #13
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Sad WRX. I agree with Scotty here its f'ed and you are 100% stock if they can't figure it out then Lemon law that B. Or purposely blow it up with some 87 octane and a 1k to redline 5th gear pull. I'm sure you'll knock it into oblivion.

Then its new longblock time and until it runs right you get a dealer loaner

Edit: maybe even jam the waste gate shut.... then you'll over boost too even more epicness for knock.
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Old 06-16-2014, 01:51 AM   #14
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Quote:
Originally Posted by Blackfin View Post
Sounds like a fuel pressure problem. Put a fuel pressure gauge inline with the pressure-feed line from the tank and monitor it as you drive.

if the soa d000d logging the car missed that one...

worth a try...but....
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Old 06-18-2014, 08:23 AM   #15
Swaj420
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Bring it back to the dealership. Id have them do a compression test and more importantly a leak down test just to make sure its not a screwed up valve or ring land failure. Either way your still under warranty.
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Old 06-18-2014, 11:23 AM   #16
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this sounds a lot like a lemon.
same issue on different occasions and the dealer can't fix?

find a lawyer.
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Old 06-18-2014, 11:23 AM   #17
Alejo_NIN
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Quote:
Originally Posted by Razgeiz View Post
Sad WRX. I agree with Scotty here its f'ed and you are 100% stock if they can't figure it out then Lemon law that B. Or purposely blow it up with some 87 octane and a 1k to redline 5th gear pull. I'm sure you'll knock it into oblivion.

Then its new longblock time and until it runs right you get a dealer loaner

Edit: maybe even jam the waste gate shut.... then you'll over boost too even more epicness for knock.
thing is that this sound smore electrical than anyting else..so blowing it up may yield the same result..just with a newer engine.
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Old 06-18-2014, 11:46 AM   #18
Razgeiz
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Quote:
Originally Posted by Alejo_NIN View Post
thing is that this sound smore electrical than anyting else..so blowing it up may yield the same result..just with a newer engine.
Yes but right now they are giving him the run around, so what difference does it make?
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Old 06-19-2014, 06:51 PM   #19
brianAshadow
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Subaru called. Said they have engineers looking at the videos I sent them and they are contacting the dealer for more info.
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Old 06-19-2014, 09:27 PM   #20
Uncle Scotty
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welllll...alRIGHTIE then....i really wanna see how this whole thing shakes out
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Old 06-20-2014, 03:10 PM   #21
brianAshadow
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welllll...alRIGHTIE then....i really wanna see how this whole thing shakes out
What's your e-mail? I'll send you the videos to check out of the two times I caught it failing.
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Old 06-20-2014, 03:20 PM   #22
thescreensavers
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Originally Posted by brianAshadow View Post
What's your e-mail? I'll send you the videos to check out of the two times I caught it failing.
youtube?
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Old 06-20-2014, 04:51 PM   #23
Rallymon
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Quote:
Originally Posted by Blackfin View Post
Sounds like a fuel pressure problem. Put a fuel pressure gauge inline with the pressure-feed line from the tank and monitor it as you drive.
+1

These symptoms seem very similar to a fuel system problem on my friend's STI. Not able to rev past 2000 rpm in gear and no indications of anything else wrong. He said the car was like it was in limp mode. His tuner identified the issue with the fuel pump.

Problems in the fuel system can cause problems downstream. Too much air, not enough fuel -> high knock -> fast dropping dam -> limp mode

Good luck with your issue. Hope this helps.
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Old 06-20-2014, 08:15 PM   #24
Uncle Scotty
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Quote:
Originally Posted by Rallymon View Post
+1

These symptoms seem very similar to a fuel system problem on my friend's STI. Not able to rev past 2000 rpm in gear and no indications of anything else wrong. He said the car was like it was in limp mode. His tuner identified the issue with the fuel pump.

Problems in the fuel system can cause problems downstream. Too much air, not enough fuel -> high knock -> fast dropping dam -> limp mode

Good luck with your issue. Hope this helps.

AGAIN....the dealer had the car 16 days and the SOA d0000d even looked at it

if they DID NOT check the fuel pressure.....and THAT is the end issue

then SOMEBODYS ASS NEEDS TO BE HANDED TO THEM FOR GROSS AND EXTREME INCOMPETENCE as this IS at the very top of the diagnostic tree for this issue

which is why i wanna know how this whole thing shakes out
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Old 06-23-2014, 12:25 AM   #25
jeffk182
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Can lemon it after 30 days total of being in the service department I believe. Hope they figure it out. 16 days is more than enough time to diagnose a vehicle IMO. My service manager would have s*** a brick if a car was at our dealership for that many days lol.
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