GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

My hoe is sick! I need the cure.

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Old Feb 16, 2008 | 07:21 PM
  #11  
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Originally Posted by Mr.Slowhoe
its a pcm4less tune and when I ordered it I had them to tune it for header and cat delete so I figure all they do is turn off the rear O2 sensors
you had them tune it for headers? but in your sig it doesnt say anything about headers....possible prob there??????
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Old Feb 16, 2008 | 08:40 PM
  #12  
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hmm, sound like you fuel pump is crapping out. Nothing like the internet, all of us guessing for you. I hope you get it worked out.
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Old Feb 16, 2008 | 08:48 PM
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Originally Posted by dewmanshu
hmm, sound like you fuel pump is crapping out. Nothing like the internet, all of us guessing for you. I hope you get it worked out.
the NARP could be bad
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Old Feb 16, 2008 | 08:52 PM
  #14  
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Originally Posted by dirt track racer 81
the NARP could be bad
That would be my guess!
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Old Feb 17, 2008 | 12:21 AM
  #15  
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Idles fine like always and does not smoke.
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Old Feb 17, 2008 | 12:27 AM
  #16  
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yea I have pacesetter LTs and what the crap is NARP lol. Im gonna stick a new fuel pump in it just for the hell of it this week so who knows if that will fix it.
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Old Feb 17, 2008 | 06:20 AM
  #17  
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Originally Posted by Mr.Slowhoe
Ok my 02 tahoe threw a P0420 code awhie back and you could feel it loose power and not rev good past a certain rpm so I hacked the converters off because it got so bad the back pressure would shut the engine down on the hwy if it got over 2500rpms. Well that fixed that problem but now it sorta feels the same way when it gets around 4k rpms. It will pull good until that spot then it feels like it has no more power to pull when it usually pulls the best around that rpm.

Could it be the fuel filter stoping up, maybe the muffler is clogged, maybe the tune on my truck is fudgin up? Im lost
The P0420 code is the cats not functioning properly. Since you hacked the converters off that fixed that problem. Whens the last time you did a tune up? Possible fuel problem like others stated i would think.
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Old Feb 17, 2008 | 08:51 AM
  #18  
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im not gonna let this go any farther than it is now but

NARP = not a real part, search for the thread about it
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Old Feb 17, 2008 | 09:11 AM
  #19  
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Originally Posted by nightrunner
im not gonna let this go any farther than it is now but

NARP = not a real part, search for the thread about it
douche bag..

if you set the p0420 code before the cats and you cut them off it will come back on because the computer will detect the cats are not there..you need to have the codes turned off in the computer...stick a fuel pressure guage on it drive it around and notice the pressure when it runs rough
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Old Feb 23, 2008 | 10:40 PM
  #20  
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Ok service engine light came on again for a day then went back off the next day so its been off for the last week.

Ok I noticed somethin. The truck acts up worse the warmer it is out side. Like today it was cold outside so the truck ran better... not perfect but better than normal but the other day when it was warm out side the truck had the problem worse than today but either way it ends up at the same place (were it will spudder bad and cut off sometimes at acceleration) just takes longer the cooler it is outside.
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