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.

poor performance

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Old 09-17-2007, 12:03 AM
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A tune up couldn’t hurt, plugs would be a good and cheap starting point. Ever replace your catalytic converter?

Ed
Old 09-17-2007, 09:12 AM
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I used to have this issue on the 99 SE in my sig.

It ended up being a combination of things. What I did to rectify it were:

Replaced fuel filter
New TR55 plugs
New Delco wires
Cleaned the throttle body

You'll probably net the most improvement from the throttle body cleaning.
Old 09-17-2007, 09:24 AM
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In the past, I bought the TR55s from Advance or Murrays.

The TB cleaning can definitely be done in one day. I'll search and see if I can find a link of the procedure since I don't have time to type it all right now...
Old 09-17-2007, 10:21 AM
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Tha'd be the one.
Old 09-17-2007, 03:29 PM
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They are both Parts America companies.


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