Elements of a 3800 series 2 tune up - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-23-2009, 04:11 PM   #1
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Default Elements of a 3800 series 2 tune up

I just purchased a 98 se bonneville and was wondering what a tune up on this car consist of? I know of spark plugs, wires and coils( i am thinking of going with a MSD setup). I am just wondering if its anything else that i should consider.
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Old 08-23-2009, 04:16 PM   #2
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Unless you have the supporting MSD mods than you would be wasting your money. Your factory coils are just fine unless you go radical.

Also replace the

PCV valve
Fuel Filter
Clean your MAF screen
Air Filter

You could also gut your air box for more air flow.

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Old 08-23-2009, 05:24 PM   #3
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What would be considered supporting mods for the MSD coils? Also i have heard that term " gutting out the air box" but not sure what that consist of?
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Old 08-23-2009, 08:27 PM   #4
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gutting the airbox consists of using a dremel or small sabre saw to remove the baffeling and other restrictive pieces of the airbox
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Old 08-23-2009, 11:24 PM   #5
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Default Service manual recommendations

Tune-up is a wonderfully vague term. The Haynes manual recommends, for a "minor" tune-up:
  • Check all fluids.
  • Clean, inspect, and test the battery.
  • Check the cooling system. (Clean radiator cap, radiator filler neck, check and top off coolant.)
  • Check all hoses.
  • Check the air filter.
  • Check the serpentine belt.
  • Check the PCV valve.
  • Replace the spark plugs.
  • Inspect the spark plug wires.

And for a "major" tune-up, all of that plus:
  • Check the fuel system.
  • Replace the air filter.
  • Check the EGR system.
  • Check the ignition system.
  • Check the charging system.
  • Replace the spark plug wires, regardless of condition.
  • (It doesn't suggest touching the MAF sensor, but I suppose it wouldn't hurt. A bottle of MAF cleaner is the only safe way to clean it, but it shouldn't be too pricey.)

As you just purchased this car, I'd go for the major tune-up, if you have the additional time and money to invest.

My recommendation is to buy a K&N air filter. Take it out and clean it (properly) every year or so, and it should last for the life of the car. It'll also let more air through than a paper filter, which will easily give you a bit more horsepower and miles per gallon.
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