1999 Pontiac Grand Prix Logo
Tracy Mazzarella
Tracy Mazzarella Posted on May 20, 2014
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Why is supercharger in 97 bonneville ssei not boosting?

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  • Tracy Mazzarella
    Tracy Mazzarella May 20, 2014

    Series II 3800 vin 1

  • Tracy Mazzarella
    Tracy Mazzarella May 20, 2014

    Well here\'s where Im at... Replaced supercharger coupler, reassembled and since hasn\'t been right...Maybe Im the knock retard but just want it back to at least how it was before the coupler was replaced.

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1 Answer

Vincent Competello

Vincent Competello

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  • Pontiac Master 354 Answers
  • Posted on May 20, 2014
Vincent Competello
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Joined: Feb 23, 2014
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How are you checking the boost pressure? If you know what you're doing and are checking the boost pressure and it is not there and the compressor is good, a valve like a waste gate on a turbo controls the boost pressure. Check to see if it is stuck open letting all the pressure out.

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mikedajakleg

  • 29 Answers
  • Posted on Feb 05, 2010

SOURCE: is a 95 bonneville ssei 3.8 supercharger the same

is it a series 2 or series 1 3800

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b0520da.png
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Mar 14, 2009 • 1999 Pontiac Bonneville
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I have a 92 bonneville ssei supercharge. The problems are that there is a knocking sound, and it seems to be coming from the supercharger, when you speed up the engine it seems to get quieter. I checked...
With a monitor scan for the knock sensor defect or no signal from PCM should have around 5volts.
Check Ignition key on engine off. With a piece of metal hit near the knock sensor and the voltage have to change normally.
Also, the EGR valve not working or clog.

For the hot engine Radiator cap defect or Electrical fan not working when hot. The radiator flush can be done if restrictions.

hope it helps.
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May 06, 2017 • Pontiac Bonneville Cars & Trucks
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