11-14-2008, 05:51 PM
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#1
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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What codes are being presented?
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1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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11-14-2008, 10:22 PM
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#2
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Registered User
Join Date: Oct 2006
Location: Vancouver, BC
Posts: 63
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Quote:
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Originally Posted by Paul
What codes are being presented?
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It's reporting P1128 and P1130.
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11-15-2008, 04:24 AM
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#3
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Registered User
Join Date: Apr 2006
Location: Collegeville, PA
Posts: 61
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I believe those codes are for the pre-cat O2 sensors on both sides of the car. Usually both O2 sensors won't go bad at the same time. I've heard this could indicate a MAF sensor problem, but I'd search through some archives to confirm that.
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2000 Boxster S, Arctic Silver, Natural Grey Leather
Factory: Aerokit I, 18" Sport Classics, Xenons, Heated Seats, Premium Sound, and more..
Upgrades: Bumper Plugs, Door Plug, Clear Sides, Clear Tails, Clear Bulbs, Painted Bumperettes, 997 Shifter, EVO Intake
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11-15-2008, 08:15 AM
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#4
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Track rat
Join Date: Nov 2006
Location: Southern ID
Posts: 3,701
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Your car is running lean. Most often from an intake vacuum leak, bad AOS, or bad MAF.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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11-15-2008, 02:44 PM
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#5
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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Can also be low fuel pressure or open evap canister purge valve.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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11-15-2008, 04:14 PM
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#6
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Registered User
Join Date: Oct 2006
Location: Vancouver, BC
Posts: 63
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Quote:
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Originally Posted by Paul
Can also be low fuel pressure or open evap canister purge valve.
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Excuse my ignorance, but what do I do to check if its these 2 things?
Thanks.
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11-15-2008, 05:48 PM
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#7
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Registered User
Join Date: Nov 2007
Location: Ottawa
Posts: 92
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What size MAF Housing are you running. The 2.7L and 3.4L MAF's are the same part but the inner diameter of the MAF Housing is different between the two.
The 3.4L has a 3.5" MAF Housing. Get a 996 Airbox lid, cut out the MAF housing and you should be good to go.
Last edited by VRsyncro; 11-15-2008 at 05:50 PM.
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11-16-2008, 08:09 AM
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#8
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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Quote:
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Originally Posted by victoreric
Excuse my ignorance, but what do I do to check if its these 2 things?
Thanks.
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PM sent.............
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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11-15-2008, 04:12 PM
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#9
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Registered User
Join Date: Oct 2006
Location: Vancouver, BC
Posts: 63
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Quote:
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Originally Posted by Topless
Your car is running lean. Most often from an intake vacuum leak, bad AOS, or bad MAF.
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I've checked for intake leak and we're suspecting the MAF right now. What does AOS stand for?
Does anyone know if I need to use the 996 MAF if I did the swap? I'm using the old one from my boxster right now.
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