WOT lag/bog questions - Page 2 - 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 09-27-2004, 09:23 PM   #11
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Check for good spark at all 6 wires. Make sure none are touching metal anywhere before you pull them off the plugs. Look for evidence of shorting, then measure each wire for resistance.

Jack the car up, and gently kick the catalytic converter. Do you hear anything?

How old is your air filter?
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Old 09-27-2004, 09:37 PM   #12
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Wires are new as of last fall Taylor Spiro Pro'*.
The catalytic converter is in good shape.
The air filter was new this spring.
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Old 09-27-2004, 09:41 PM   #13
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Quote:
Originally Posted by 1994ta
Wires are new as of last fall Taylor Spiro Pro'*.
I have a straight pipe in place of the cat so that'* not an issue.
The air filter was new this spring.
Don't assume the wires are good. We've had a rash of quality issues with Taylor recently. Including 2 consecutive sets in my own car. Check them.....in fact, spray the engine with a light mist of water at night while the engine is running and look for shorts. Then pull the wires, crank and look for spark. Measure each wire'* resistance, then pull all 6 plugs (keep them in order for reference) and read them.

And don't talk about the catless car in public PM me and I'll tell you all the reasons why.
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Old 09-28-2004, 02:13 PM   #14
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The idle is fixed, I replaced 2 vacuum lines today and it sits right around 900 rpm and as smooth as i can ever remember. Still have the bog though :( no codes :( I'll be checking the wires this week.
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Old 09-28-2004, 03:16 PM   #15
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Bog sounds more like a clogged cat than ignition, but don't rule ignition out. What are your operating temps like?
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Old 09-28-2004, 08:40 PM   #16
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Temps are good, just under 200 degrees with a 180 tstat and a manual switch
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