Thread: P0171 code after intake gasket change.

Results 1 to 14 of 14
  1. #1 P0171 code after intake gasket change. 
    SE Level Member
    Join Date
    Jan 2013
    Location
    Texas
    Posts
    37
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    this is what happened...

    while changing intake gasket, the rubber T that connects the vacuum lines broke and so i rigged a new one <- might be the cause
    when pulling out fuel rail and injectors, some wierd plastic piece on bottom after the o-ring broke. no leak cold be found.

    right after the intake gasket change, ran car for a good 40mins with no engine light. this mornin it comes on. also got a clicking sound coming from alternator. think i need a new one?

    please help me with this retarded P0171 code
    Reply With Quote  
     

  2. #2 Re: P0171 code after intake gasket change. 
    GTP Level Member 01gpgt01's Avatar
    Join Date
    Apr 2010
    Location
    Hagerstown,Md
    Posts
    1,933
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    injector tabs breaking dont matter. But yeah you have a vac leak somewhere.
    2001 GT. A few here and there mods http://www.streetfire.net/video/2001...ynp_208097.htm

    2009 Hummer H3 Solar flare premium
    Reply With Quote  
     

  3. #3 Re: P0171 code after intake gasket change. 
    SE Level Member
    Join Date
    Jan 2013
    Location
    Texas
    Posts
    37
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    alrigth so replace all vac lines and T connector?
    Reply With Quote  
     

  4. #4 Re: P0171 code after intake gasket change. 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,997
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    i replaced these vac lines and both T's.



    and the line on top of the TB was cracked as well. so i used a fat vac line to a smaller line that would fit inside the fat line, then to the plastic stock line, this line runs to the evap off the back of the sc.


    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  5. #5 Re: P0171 code after intake gasket change. 
    SE Level Member
    Join Date
    Jan 2013
    Location
    Texas
    Posts
    37
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    holy crap! just found the solution by looking at your pic. im missing THAT hose
    vachose.jpg
    can u tell me where that hose goes? perferably a from - and - to pic
    Reply With Quote  
     

  6. #6 Re: P0171 code after intake gasket change. 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,997
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    that vac lines goes inside the cars cab to the dash. it controls the fan directions. huge vac leak lol.

    look behind the engine for it, thats where i tossed mine when doing the lim gaskets.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  7. #7 Re: P0171 code after intake gasket change. 
    SE Level Member
    Join Date
    Jan 2013
    Location
    Texas
    Posts
    37
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    yeah lol. i that there was suppose to be something there.
    Reply With Quote  
     

  8. #8 Re: P0171 code after intake gasket change. 
    GT Level Member Erik Adam Rodriguez's Avatar
    Join Date
    Sep 2012
    Location
    bridgeport,NY
    Posts
    459
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    and your car ran smoothly with that off?
    02 grand prix gt- L67 swap, ZZP 1.0 pcm, thrasher CAI, SLP 2.5 catback, A/C delete, 02 emulator, poly dog bone mounts, 6000k projectors with CCFL halos, 12 in slotted front rotors, ported blower and intake, evap and EGR deleted, 12" kicker cvr with 1000 watt amp, alpine cda 9886 deck
    Reply With Quote  
     

  9. #9 Re: P0171 code after intake gasket change. 
    SE Level Member
    Join Date
    Jan 2013
    Location
    Texas
    Posts
    37
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    it did! for 40 mins straight. but the idle seems lower. idles at 900 instead of 1200. also if i rev it to 2000 or 2500 and release peddle, tach goes to 1500 and idles for 3 secs and slowly goes to 900
    Reply With Quote  
     

  10. #10 Re: P0171 code after intake gasket change. 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,997
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    that vac line will come from the pass of the car. off the firewall.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  11. #11 Re: P0171 code after intake gasket change. 
    GT Level Member Erik Adam Rodriguez's Avatar
    Join Date
    Sep 2012
    Location
    bridgeport,NY
    Posts
    459
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by 01gpgt01 View Post
    injector tabs breaking dont matter. But yeah you have a vac leak somewhere.
    so if they are not there anymore its fine?
    02 grand prix gt- L67 swap, ZZP 1.0 pcm, thrasher CAI, SLP 2.5 catback, A/C delete, 02 emulator, poly dog bone mounts, 6000k projectors with CCFL halos, 12 in slotted front rotors, ported blower and intake, evap and EGR deleted, 12" kicker cvr with 1000 watt amp, alpine cda 9886 deck
    Reply With Quote  
     

  12. #12 Re: P0171 code after intake gasket change. 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,997
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    found a over view of that vac line.


    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  13. #13 Re: P0171 code after intake gasket change. 
    SE Level Member
    Join Date
    Jan 2013
    Location
    Texas
    Posts
    37
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    sweet thank you scotty
    Reply With Quote  
     

  14. #14 Re: P0171 code after intake gasket change. 
    GTP Level Member 01gpgt01's Avatar
    Join Date
    Apr 2010
    Location
    Hagerstown,Md
    Posts
    1,933
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by Erik Adam Rodriguez View Post
    so if they are not there anymore its fine?

    Thats correct
    2001 GT. A few here and there mods http://www.streetfire.net/video/2001...ynp_208097.htm

    2009 Hummer H3 Solar flare premium
    Reply With Quote  
     

Similar Threads

  1. Hi I'm new and have a p0171 code, can you help?
    By falconjohnd in forum Engine
    Replies: 77
    Last Post: 12-15-2011, 07:45 AM
  2. intake gasket change
    By NICKS04GTP in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 3
    Last Post: 10-31-2011, 04:31 PM
  3. Intermittent P0171 code
    By mwzeigler in forum 3.8L V6 Naturally Aspirated (L36)(L26)
    Replies: 3
    Last Post: 08-25-2011, 06:10 AM
  4. intake gasket change guide
    By 94grandprix in forum 3.1L V6 (LHO/LG8)
    Replies: 0
    Last Post: 04-08-2011, 07:38 AM
  5. s/c gasket leaking setting p0171
    By nascartech in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 3
    Last Post: 07-28-2010, 04:56 PM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •