Thread: 2000 Grand Prix GT HELP

Results 1 to 19 of 19
  1. #1 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Okay I have a 2000 Grand prix gt 3800 series II. Runs great but when you drive and press the pedal too far down it wont go. you cannot gun it. You have to baby it up to speed which really makes people behind me pissed. Ran 3 codes. PO131 PO134 and then multiple missfire. The Codes are with o2 sensors. 1 was already replaced. Please help me out guys it would be greatly appreciated. Thanks guys
    Reply With Quote  
     

  2. #2 Re: 2000 Grand Prix GT HELP 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    21,022
    Thanks (Received)
    21
    Likes (Received)
    45
    Dislikes (Received)
    0
    does the SES flash at all?

    And I kinda wanna take a guess at saying maybe your cat is clogged with how bogged down it get beyond 1/2 throttle.

    SMGPFC Member #1
    Reply With Quote  
     

  3. #3 Re: 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I dont think it does what does the ses stand for? (new pontiac owner) and you would think o2 sensors with the o2 sensor codes
    Reply With Quote  
     

  4. #4 Re: 2000 Grand Prix GT HELP 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    21,022
    Thanks (Received)
    21
    Likes (Received)
    45
    Dislikes (Received)
    0
    service engine soon, check engine light


    Well what do the o2 sensors do?

    They monitor your emssions and air and fueling. So in turn they monitor the effectivness of your cat converter.

    Go grab a pressure gauge and take the upper o2 sensor out and screw the pressure gauge in its place and start the car, if the pressure gauge read more than 1-2 psi your cat is clogged.

    SMGPFC Member #1
    Reply With Quote  
     

  5. #5 Re: 2000 Grand Prix GT HELP 
    Sunroof S/C'es air 2 face E IN v Y's Avatar
    Join Date
    Jun 2011
    Location
    I’m a space bound rocketship and your hearts the moon.
    Posts
    2,103
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    You may have too much back pressure, making the engine work harder.
    Dont drive it if the ses light is flashing... its damaging your 02 and cat.
    Reply With Quote  
     

  6. #6 Re: 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Yes the service engine soon light is on..but then itll turn off sometimes and wont turn back on for quite a while maybe a day or two....Im gonna check the sensor behind the cat later and then i might just go buy a new cat also
    Reply With Quote  
     

  7. #7 Re: 2000 Grand Prix GT HELP 
    GTP Level Member BlackGT97's Avatar
    Join Date
    Jul 2011
    Location
    Michigan
    Posts
    820
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    just check to see if its flowing before you buy a new cat
    Reply With Quote  
     

  8. #8 Re: 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Im going to try and replace the o2 sensor tomorrow and hope to god that it fixes it..Worse case senario i go get a cat from summit racing for $50
    Reply With Quote  
     

  9. #9 Re: 2000 Grand Prix GT HELP 
    The mod from over yonder TheOtherNick's Avatar
    Join Date
    Sep 2008
    Location
    Charles City, IA
    Posts
    9,955
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    pull the front 02 out and take it for a drive and see if its better.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
    SMGPFC Two Nipple General
    Reply With Quote  
     

  10. #10 Re: 2000 Grand Prix GT HELP 
    GTP Level Member BlackGT97's Avatar
    Join Date
    Jul 2011
    Location
    Michigan
    Posts
    820
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    ^^^this will probably be the easiest/fastest test
    Reply With Quote  
     

  11. #11 Re: 2000 Grand Prix GT HELP 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    21,022
    Thanks (Received)
    21
    Likes (Received)
    45
    Dislikes (Received)
    0
    sigh

    or what I said, but listening is just too hard nowadays.

    SMGPFC Member #1
    Reply With Quote  
     

  12. #12 Re: 2000 Grand Prix GT HELP 
    GTP Level Member BlackGT97's Avatar
    Join Date
    Jul 2011
    Location
    Michigan
    Posts
    820
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    and what exactly happens when you "gun it". does it bog down or does the motor stumble (like a real bad misfire). do plugs and wire.
    Reply With Quote  
     

  13. #13 Re: 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    replaced o2 sensor behind the cat and it did not fix it...top one was replaced already...im going for clogged cat...when i gun it it bogs down a little and acts like a bad misfire yes
    Reply With Quote  
     

  14. #14 Re: 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    i unplugged the top sensor and it didnt change the car at all
    Reply With Quote  
     

  15. #15 Re: 2000 Grand Prix GT HELP 
    Turbo is the way to go. BillBoost37's Avatar
    Join Date
    Jul 2009
    Location
    W Spfld
    Posts
    26,815
    Thanks (Received)
    53
    Likes (Received)
    90
    Dislikes (Received)
    1
    Quote Originally Posted by TheOtherNick View Post
    pull the front 02 out
    As in remove
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
    Reply With Quote  
     

  16. #16 Re: 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    ohhhh lol okay...and it should run better? and if it does then what?
    Last edited by 20grandprix00; 10-24-2011 at 04:06 PM.
    Reply With Quote  
     

  17. #17 Re: 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I took it out and no difference still doing the same thing...
    Reply With Quote  
     

  18. #18 Re: 2000 Grand Prix GT HELP 
    GTP Level Member BlackGT97's Avatar
    Join Date
    Jul 2011
    Location
    Michigan
    Posts
    820
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    here is what needs to be checked
    -fuel delivery
    -air delivery
    -flow (as in exhaust)
    -sufficiant spark to ignite the fuel
    now when you figure that out^^^good luck finding what is causing that problem
    ex. there are many sensors that can effect air/fuel problems.
    Reply With Quote  
     

  19. #19 Re: 2000 Grand Prix GT HELP 
    SE Level Member
    Join Date
    Oct 2011
    Location
    Stow,OH
    Posts
    11
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    fuel is getting enough pressure...im takin the cat off tomorrow and gonna see what happens
    Reply With Quote  
     

Similar Threads

  1. 2000 Grand Prix
    By 2005GrandPrix in forum Members Rides
    Replies: 8
    Last Post: 02-01-2011, 08:36 PM
  2. i need help with my 2000 grand prix gt
    By aaroncarroll in forum Off Topic Discussion
    Replies: 3
    Last Post: 07-12-2010, 02:45 PM
  3. 2000 grand prix gt
    By candt in forum 1997-2007 4 speed Automatic (4T65E) (4T65E-HD)
    Replies: 0
    Last Post: 12-01-2008, 10:41 AM
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
  •