1995 Bonny Supercharged 3800 Part II - 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 08-09-2003, 07:16 AM   #1
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Default 1995 Bonny Supercharged 3800 Part II

I've made a collection of all the data I've received(and $ spent), and this is what I have come up with.

1995 Bonny Supercharged(assume SE and Series I)
Diagnostic scan says that at wide open throttle I am running very rich and the computer is compensating to the other side of the spectrum and is running so lean that my exhaust is turning orange.

Replaced:
O2 sensor(AC Delco)
catalitic converter
Plugs(tried rapidfire and standard, not sure which is a better plug)
Wires
air filter
fuel pressure regulator(AC, but I think I still have low pressure)

One dealership told me they don't know and can't help me, and another wants to spend a day looking at it and I'm not willing that kind of cash.

Any help would be greatly appreciated.

Thanks,

Bigt
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Old 08-09-2003, 10:40 AM   #2
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Need a scan tool hooked up at WOT to see which parameters are reading incorrectly.
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Old 08-16-2003, 04:42 AM   #3
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Default What to look for?

The guy I had scan it, did it for free so I didn't push the envelope and ask a lot of questions. If I ask him to scan it again, what should we be looking for. What could make you run rich? I don't want to be a pain but I'm trying to keep the $ to a minimum. Is there some things I could look for or check with a multimeter?

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Old 08-18-2003, 08:58 PM   #4
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It is a bit tougher with the multimeter. If I scanned it I would capture all of the data for a period of time while you are at WOT and experiencing the problems. Then I would check the data with a chart to see if anything is out of spec.

At WOT you would be looking for high air flow, high throttle angle, etc.
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