What to change for a good tune-up? - 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 05-16-2007, 08:42 PM   #1
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Default What to change for a good tune-up?

I've got 81,500K on the N/A motor

I just did the oil and filter...

Thinking I need to do Plugs and Wires, PCV, Fuel Filter, Air Filter....

What else do I need to check/change?

Is there any brand that gives more performance thats not expencive?(more for plugs and wires)
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Old 05-16-2007, 08:52 PM   #2
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AC Delco or NGK plugs. Never Bosch.

Belden Premium wires from NAPA.

O2 sensor (front only) if it'* original. They start getting tired around 60k.

Pull the TB (per Techinfo) and clean it, the MAF sensor, and the IAC valve/passage/seat.
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Old 05-16-2007, 10:57 PM   #3
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If you clean the TB, make sure you clean the IAC, cleaning mine helped with the rough idle, and Im getting 2 more MPG...

Ditto on everything else Delco plugs, Belden wires=smooth runner

Bob
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Old 05-17-2007, 09:36 AM   #4
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Have the LIM/UIM things been addressed?
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Old 05-17-2007, 08:00 PM   #5
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Quote:
Originally Posted by BonnevillesSince62
Have the LIM/UIM things been addressed?
Umm no? What is it?

I just bought it so I don't know what has been done or not.
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Old 05-17-2007, 09:01 PM   #6
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