Thread: GT Sputtering under load- only at idle and slowing down

Page 2 of 2 FirstFirst 12
Results 21 to 30 of 30
  1. #21  
    GTP Level Member apierce1289's Avatar
    Join Date
    Mar 2011
    Location
    United States
    Posts
    500
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by 99GrandPrixGTP View Post
    The relearn is done on a diagnostic tool, it's call a "crankshaft position variable relearn"
    Just curious. Can you do this wth hptuners software?

    Sent from my DROID RAZR using Xparent Red Tapatalk 2
    Gremlins always seem to show up in pairs, or groups of three with our cars...
    Reply With Quote  
     

  2. #22  
    SE Level Member
    Join Date
    Oct 2012
    Posts
    25
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Ok so plugs and wires didn't fix in. And the problem got worse. Now it won't run at idel. I can start it by giving it gas, and shirt and drive quick and runs fine on the road. But as soon as the rpms. Get less the 1000. It dies ????

    Sent from my BlackBerry 8530 using Tapatalk
    Reply With Quote  
     

  3. #23 Re: GT Sputtering under load- only at idle and slowing down 
    Moderator dsmuts's Avatar
    Join Date
    Feb 2011
    Location
    Coldwater, OH
    Posts
    15,758
    Thanks (Received)
    1
    Likes (Received)
    1
    Dislikes (Received)
    0
    Try unplugging the maf sensor then starting it and see if it's any better.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
    Reply With Quote  
     

  4. #24 Re: GT Sputtering under load- only at idle and slowing down 
    Moderator dsmuts's Avatar
    Join Date
    Feb 2011
    Location
    Coldwater, OH
    Posts
    15,758
    Thanks (Received)
    1
    Likes (Received)
    1
    Dislikes (Received)
    0
    What plugs did you use.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
    Reply With Quote  
     

  5. #25  
    SE Level Member
    Join Date
    Oct 2012
    Posts
    25
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I used auto light platinum I think, they where like 8 bucks a piece. I'm gonna try unpluging in the morning if it doesn't start agin. Right now its starting again. But still has the rough idle. But when I drive its fine. Got good pep and everything!
    I was reading about this fuel pump resistor issue. Do you think that could come in to play? Or are the syptoms not the same?.

    Sent from my BlackBerry 8530 using Tapatalk
    Reply With Quote  
     

  6. #26 Re: GT Sputtering under load- only at idle and slowing down 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,997
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    lots of people here will tell you platinum dont run well in these motors. you may want to try a set of iridium plugs.

    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. #27 Re: GT Sputtering under load- only at idle and slowing down 
    Moderator dsmuts's Avatar
    Join Date
    Feb 2011
    Location
    Coldwater, OH
    Posts
    15,758
    Thanks (Received)
    1
    Likes (Received)
    1
    Dislikes (Received)
    0
    Return the plat plugs. The fuel pump res would make it not start at all or start for a few seconds and die.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
    Reply With Quote  
     

  8. #28  
    SE Level Member
    Join Date
    Oct 2012
    Posts
    25
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Ok that's worth a shot, but if it was the plugs would it run perfectly in all other ways. Right now its starting again. And is fine just putts at idle when I go to stop and take off.

    Sent from my BlackBerry 8530 using Tapatalk
    Reply With Quote  
     

  9. #29  
    SE Level Member
    Join Date
    Oct 2012
    Posts
    25
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Ok new issue, I beleave its related.. The cars been running ok for a little bit. I'm driving down the road and the car hesatates like its going to die again... But dosnt , in stead the tac dies.. For looking in to it it sounds to be close to crank shaft sensor. Now I replaced the cam shaft sensor because that's the code I had. But looking at the wires. I'm guessing the crank shaft sensor could throw this code as well. What ya guys think. You think that's it?

    Sent from my BlackBerry 8530 using Tapatalk
    Reply With Quote  
     

  10. #30 Re: GT Sputtering under load- only at idle and slowing down 
    SE Level Member
    Join Date
    Oct 2012
    Location
    MI
    Posts
    2
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    did u check the fuel pressure regulator. Pretty sure 2003 & older are still on the fuel rail. Pull off the vacuum hose on the top of the reg & see if it has any fuel in the vacuum hose. If so the diaphram is bad & the reg needs to be replaced.
    Reply With Quote  
     

Page 2 of 2 FirstFirst 12

Similar Threads

  1. GTP sputtering, misfireing under load
    By LSXHP in forum General Tech Discussion
    Replies: 25
    Last Post: 10-23-2012, 04:31 PM
  2. sputtering under load
    By Jay7199 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 3
    Last Post: 04-01-2011, 01:44 PM
  3. gtp: sputtering on idle then dies
    By pontiaccrazy in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 5
    Last Post: 04-30-2010, 07:22 PM
  4. low idle....near stalls....can't handle load or deceleration...ahh
    By gotboost3 in forum General Tech Discussion
    Replies: 6
    Last Post: 05-16-2009, 01:18 PM
  5. Vibration when slowing down
    By 03GPScottyd in forum Brakes/Suspension/Chassis
    Replies: 9
    Last Post: 12-27-2008, 03:15 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
  •