LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Missfire Problem Help plz

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Old Feb 2, 2010 | 10:37 AM
  #21  
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Default accel

Im runing an Used accel coil that i bought on the sale theads claims to have 3000 miles on it. I still have the stocker that worked fine.
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Old Feb 2, 2010 | 10:47 AM
  #22  
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thats what i was going to say next, put the stocker back on and with the good wires you wont throw spark everywhere.
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Old Feb 2, 2010 | 11:03 AM
  #23  
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Default pcm

Ok cool im about to go change out the accel coil and install the stocker one. With the MSD wire set its not sparking out the wires it just has the miss/poppin/cutting off problem. Would you happen to have a spare PCM for a 97 lt1 auto?? Just wanted to make sure my PCM for less tune wasnt jacked up or the reprogrammed pcm they sent me is bad.
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Old Feb 2, 2010 | 11:23 AM
  #24  
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i dont, mines a 94. Its a stock tune at the moment but not sure if there the same or not
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Old Feb 2, 2010 | 11:34 AM
  #25  
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Yours is an obd 1 i got obdII, thanks for the offer though. Ok just changed the accel coil to stock coil but wifey took the GOD DAMN KEYS. Ill get back this afternoon.
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Old Feb 3, 2010 | 03:51 PM
  #26  
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Default accel coil

Well replaced accel coil with stocker and still the same. What causes the belt to squeeek when you floor it on an auto and revs go up to 4500rpm. Im running an gatorback belt ?
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Old Feb 5, 2010 | 09:52 AM
  #27  
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Default video of pcm4less tune

Guys heres a video of problem im having. This a video with the pcm for less tuning.

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Old Feb 5, 2010 | 10:12 AM
  #28  
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Default computer tune

This is a stock pcm which was supposed to be 97ss a4 but my speedometer is off and my auto tranny wont shift . So i think its a 97ss m6 pcm all i did was manual shift it for the run just to compare stock tune.


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Old Feb 5, 2010 | 10:15 AM
  #29  
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Guys let me know what you think. Im running out of options here all the sensors have been replaced. Is it the tune or is it the opti. Pcm4less did the tune and added the power tune option. Let me know what you guys think
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Old Feb 8, 2010 | 12:56 PM
  #30  
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Default fp regulator

Guys when you unplugg the vac off the fuel pressure regulator, is the idle suppose to change?? I called pcmforless and talked to keith and he said it might be a mechanical issue not a tunning issue. Before I take it to a shop is there anything else i need to check? There is a shop here in humble that charges me $80-85 to tell me whats wrong with it. Is that about right?
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Old Apr 9, 2010 | 11:25 PM
  #31  
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Ok guys can somebody check out the videos? I have replaced the stock fuel pump with a walbro and jegs wires with some msd.
1. WHAT CAN CAUSE MY HEADERS TO GLOW RED EVEN WHEN IDLING?
2. WHAT CAN CAUSE MY IDLE TO GO FORM 1OOO RPM TO 1500?

The car is idling bad and it STILL CUTTING OFF AT HIGH RPMS, I NEED SOME ADVICE WHAT TO DO NEXT????????
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Old Apr 10, 2010 | 11:15 AM
  #32  
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man don't ever rule out the opti....even if it's new. sounds like the famous opti top end break up
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Old Apr 10, 2010 | 12:43 PM
  #33  
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Glowing headers can be caused by a bad intake leak, or the timing being off. I would check both.
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Old Apr 10, 2010 | 05:01 PM
  #34  
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what kind of tools do you have access to? can you watch timing with some sort of scanner....laptop & cables? no liability here but i've done it...check your intake runners and any suspected locations for vacuum leak with some brake clean, carb clean, or an unlit propane torch. your engine will increase in rpm if there is a leak.
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Old Apr 10, 2010 | 05:05 PM
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Glowing headers = clogged cat.
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Old Apr 10, 2010 | 05:12 PM
  #36  
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mmmmmmmm he's on to somethin
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Old Apr 12, 2010 | 08:19 AM
  #37  
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Cats have been gutted out, there is no restrictions on the exhaust. Im gonna try to find a scanner. My budy has HP TUNERS. Can we look at the sensors,timing etc with that tunning program? I can find that thread about the cable for obdII and software to log in a laptop.
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Old Apr 12, 2010 | 08:20 AM
  #38  
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There is no check engine light on but while dricing sometimes it comes on and goes away by itself. I checked it the other day i threw a p0100 and i dont remember the other one.
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