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Old 02-09-2015, 11:41 PM   #576
MSo
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Time to change gas filter!!!!
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Old 02-10-2015, 12:03 AM   #577
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Could be

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Old 02-14-2015, 09:55 PM   #578
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Quote:
Originally Posted by daywalk3r View Post
Could be

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No MAF is dead. You people need to understand that according to Bren subies wont throw a code for a maf sensor...more often than not people blow shortblock after shortblock running too lean with this code they cant get rid of


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Old 02-18-2015, 01:15 AM   #579
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FYI - I fixed P0170 issue two years ago by replacing MAF three times. Turned out that I had 2 bad MAF sensors. Cost me hundreds of dollars and almost two years to figure it out.
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Old 02-21-2015, 12:06 PM   #580
Buddylight
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hey i have an 08 wrx thats throwing that p0171 along with p0301, p0302, p0303, p0304 what should I look at first thanks.
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Old 02-21-2015, 12:10 PM   #581
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Post in the 2.5 forum. This is the 2.0 forum. You'll get more pertinent info. All 4 cylinders are misfiring. That is not good.

Edit: nevermind. Just realized this whole thread is for p0171. Still not completely awake.
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Old 02-26-2015, 08:50 AM   #582
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12 impreza stock. 40k miles. P0171. Every time I run fuel injector thru the tank the code clears for the entire tank of gas. Once I refill it comes back on pretty soon. I've tried different gas stations (thought it might be bad gas)..

Is this as simple as a bad fuel injector, or does running injector alter what the car thinks is lean/rich?

The only symptoms I have are some hard starting and maybe a little bucking when i rev the engine to ~4k rpms during idle (doesn't buck when i get that high driving though.)

Last edited by Morario84; 02-26-2015 at 09:25 AM.
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Old 02-26-2015, 09:30 AM   #583
AlexWRXbruh
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Sounds like ur fuel filters need changing or ur fuel pump is dying


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Old 02-26-2015, 09:32 AM   #584
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Quote:
Originally Posted by AlexWRXbruh View Post
Sounds like ur fuel filters need changing or ur fuel pump is dying


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Do you think it could really be a fuel pump with only 40k miles? My MPG is normal I think, and I don't see any loss of performance when I drive.. Doesn't buck or anything when I floor it, only when revving during idle.
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Old 02-26-2015, 09:41 AM   #585
AlexWRXbruh
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Thats why i suggested the filters, something could be stuck in there messing with things. Now that i think about it though, check the passenger side of ur intake manifold. There should be a small vacuum line like an inch or two long coming from the fpr on ur fuel rail and going to the manifold. Pretty common it pops off


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Old 02-26-2015, 09:52 AM   #586
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Thanks. I'll try to check that today. By fuel filter, you mean the one in the tank under the seat, correct?
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Old 02-26-2015, 10:02 AM   #587
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Nope, in the engine bay. Check the other if you check the pump. I think that line is disconnected though
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Old 02-26-2015, 10:03 AM   #588
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And no prob, happy to help
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Old 02-26-2015, 10:51 AM   #589
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My fiancee just picked up a used 2008 WRX and it threw the same code less than two months later. Took it to the dealer and turns out it was just a vacuum leak and the warranty covered it. I'm glad about that because I have only messed with my Bugeyes' engine and not the newer ones.
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Old 02-26-2015, 11:54 AM   #590
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Quote:
Originally Posted by AlexWRXbruh View Post
Nope, in the engine bay. Check the other if you check the pump. I think that line is disconnected though
I thought the fuel filter for newer imprezas was totally moved to the fuel pump in the tank..

http://forums.nasioc.com/forums/show....php?t=2619563
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Old 02-26-2015, 12:08 PM   #591
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Your right. Id say give it a look then, but im still betting on the vac line
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Old 02-26-2015, 02:13 PM   #592
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Quote:
Originally Posted by AlexWRXbruh View Post
Your right. Id say give it a look then, but im still betting on the vac line
I just took a pretty good look around and didn't see anything loose or anything dangling. That said, I'm not exactly sure where my fuel pressure regulator is (I am a newb). I did a bit of googling and didn't see anything that looked like http://i3.photobucket.com/albums/y73...6/DSCN9954.jpg or http://img.tapatalk.com/d/12/09/26/ybamarer.jpg

I took a picture of what I thought it might be. It's a similar looking housing sitting right between the injectors. Is this thing it with the blue clips?




Also- I see we are neighbors! Do you have a mechanic in the area you like?
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Old 02-26-2015, 03:17 PM   #593
AlexWRXbruh
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Ya, i do it all myself; im going to porter chester for auto technology so im sure i can figure it out. I'll pm u my number
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Old 02-28-2015, 11:13 AM   #594
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Mario appeared to have a bad front o2 sensor; i pulled codes for a bad heater circuit, as well as the p0171 code after it cleared while he was driving over.


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