Mis-fire, Shutter, Shake, No-Rev, etc... - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-12-2009, 06:56 PM   #31
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Default <--- Feels ReTarDed!!! lol

Fixed the raggedness of the car. Let one of the mechanics in the shop work on it when he was bored and had nothing to do and after running some tests he found that the #5 spark plug had a hairline stress fracture... not clue why (could be anything)... and it was arcing out of the plug and not fireing inside... but was sparking enough to not throw a miss-fire code... so we replaced it and i lost the cat(was broken anyways, and im cheap) and its runnin ALOT better... still has the P0131(O2 sensor low voltage) & P0171(Fuel Trim Lean) so I think i still need to replace the O2 sensor to clear them, if not im replace the PCM... yay *sigh* lol

just an update for those who care to kno :P
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Old 01-28-2009, 10:51 AM   #32
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Default coughing... again... darn it

put new plugs and wires one yesterday due to she started coughin again... sputters a lil when revving up and while under load after getting warm...
think it might be due to the sudden cold but it shouldnt be
anyone think it could be the "seafoam" cleaner i ran thru the gas tank? it started yesterday, i put it in 2 days ago
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Old 01-28-2009, 10:55 AM   #33
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It might be loosening things up a bit. Mine didn't run at 100% when I did that either. Run that tank good and low and then fill it back to the top. I generally only put about 2/3 of a can in the tank, that way it'* not going to run to bad.
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Old 01-28-2009, 11:21 AM   #34
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ah... k k
ya i put in the whole enchilada so thats prolly it... i hope

i was afraid it was the plugs... and i could see the wires glow in some spots so i got them exchanged and checked the plugs for wear, stress cracks, discoloration and they were perfect so i put em back in and thought id wait to see if its the fuel
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Old 01-28-2009, 11:25 AM   #35
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Give it a tank or two and see what happens
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