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2007-01-26, 09:49 AM
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#1 |
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EJ22
Join Date: Aug 2005
Location: Reno, NV
Posts: 110
Car: 04 wrx, bunch of mods
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Threw a code PO171
This code is lean running condition. I wasn't stepping on it when it came on. My car is at 60000 miles now, its due to get the spark plugs changed but i don't know if that would cause the problem. Should i try cleaning the MAF? (What should i use to clean it, WD-40) It never threw this code before and i've been running a custom tuned AP for a while. I read in another thread that someone had one of there recirc hoses come loose, which cause the problem. Others said that it could be caused by a boost leak, but boost is fine. Any idea's???
Thanks, Dave |
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2007-01-26, 09:55 AM
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#2 |
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Captain Turbo
Join Date: Feb 2004
Location: Reno
Posts: 3,318
Car: 05 STi
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2007-01-26, 10:26 AM
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#3 |
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The Doink
Real Name: Scott Join Date: Nov 2002
Location: Portland, OR
Posts: 20,335
Car: '09 OBXT, '02 WRX, '96 Miata
Class: PDX/TT-6
The way out is through
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And don't use WD-40 on a MAF!!! WD-40 is a lubricant, not a cleaner. Pick up some CRC MAF cleaner from just about any Kragen.
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Is you is, or is you ain't, my con-stit-u-ints? |
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2007-01-26, 12:46 PM
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#4 |
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Token
Real Name: Le Stig Afrique? Join Date: Jun 2005
Location: sitting next to a big yellow box
Posts: 3,589
Car: 2001 Impreza 2.5 RS
Class: 05 TDSP
No, I won't work on your car. F* your car
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That writeup Mike posted is all good info!
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"...these condoms have a topical anesthetic to reduce sensitivity, so you can last longer. What a paradox. You can't feel a thing, but you can f*ck for HOURS..." |
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2007-01-26, 04:30 PM
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#5 |
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EJ22
Join Date: Aug 2005
Location: Reno, NV
Posts: 110
Car: 04 wrx, bunch of mods
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that is a good post. I have a short ram intake and that never caused a problem before. I checked all connections but can't find any leaks. For now, i just used the AP to reset the ECU. If it comes back on, i know that there is a problem somewhere. The engine runs fine, no changes in performance.
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2007-01-26, 04:34 PM
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#6 | |
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The Doink
Real Name: Scott Join Date: Nov 2002
Location: Portland, OR
Posts: 20,335
Car: '09 OBXT, '02 WRX, '96 Miata
Class: PDX/TT-6
The way out is through
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Quote:
On the other hand. My car seems to learn bad habits up here at altitude requiring me to reset the ECU frequently to fend of brutal hesitation that the ECU learns. But that doesn't seem to be an altitude problem... I think it's 'cause the ECU is learning to pull timing due to all the oil I get blowing into my intake from the block breathers. 
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