WHY DO I HAVE POWER LOSS AT 3000 RPM ONLY?

  • Tiny
  • Steve099
  • 1999 Infiniti G20
  • 160,000 miles

New Plugs, New Plug Wires, New Front and rear O2 sensor.
Replaced MAF, Cap, Rotor.
Had P0301 Code and rough Idle at take off. This was fixed by cleaning EGR.
No codes now, only the following, issue that can be created.
Speed up to 2800-3000 RPM and let foot off gas pedal, then If I excellerate, it then seems that gas is cut off at this point, will only speed up IF downshift occurs.

This also seems to happen when in second (2) at 4500 RPM.?

Steve

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Friday, September 30th, 2011 AT 6:55 PM

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  • Tiny
  • Docfixit
  • Expert
  • 18,991 posts

Maybe fuel pressure have that checked

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Friday, September 30th, 2011 AT 7:24 PM
  • Tiny
  • Steve099
  • Member

I will Check that, but when this happens I can put in neutral and rev to 7000 rmp not issues, Also injectors sound like the are all fine.

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Saturday, October 1st, 2011 AT 1:02 AM
  • Tiny
  • Docfixit
  • Expert
  • 18,991 posts

Pressure 34 psi vacuum connected at idle 43 psi vacuum disconnected

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Saturday, October 1st, 2011 AT 7:39 PM

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