LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Woo hoo! I think I found my Problem!

Old Jul 30, 2003 | 03:07 AM
  #1  
TobyZ28's Avatar
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Joined: Aug 2002
Posts: 2,325
From: BC
Woo hoo! I think I found my Problem!

The last while i've been dying to find out what the !%!%! is wrong with my car at Low RPM's and its been buging me for ages.
Tonight i decided to check for arcing, as i have many times before.. but this time decided to kinda peer in and look a bit closer than i usually did.. and whaddya know, some tiny sparks were right near the boot grounding with the block i think... steadily pulsing with each cycle... Very tiny though, me being just a computer guy who doesnt know all that much about cars, assumed it would have been large sparks and big long arc's... like some other people have described it... "light show" has been commonly used. But these sparks were TINY! nothing like what i was expecting. Anyhow I'll definatly reply to this if it is the cause of my Low RPM stumble issues...

My exact low RPM stumble symtoms are as follows:
Only happens when warm it seems.
Happens around 1500 RPM in OD, usually crusing... and occurs right when i'm trying to accellerate slightly.. its like it hits a wall at 1500, and until i mash it down a bit more it continues on at 2500 RPM. 1500/2500 vary from time to time too. I do not get any stumbles high up at all....

So.. hope this helps some people, i'll try some crazy new Accel 9000 series wires. Hopefully this should fix it!

What do you guys think? Think this will solve all my probs.. any tips for changing my plugs?
Old Jul 30, 2003 | 06:22 AM
  #2  
Smoke T/A's Avatar
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Joined: Jul 2001
Posts: 718
From: Wichita Falls,Texas
Good luck with your fix. Last time i had something like that happen was the pcm was picking up false knock from the motor and retarding the timing 2-5* between 1500-2500 rpm. But hey I think the duals with no x and the cc306 had somthing to do with that also.
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