Why is there random loss of power with my 2010 Nissan 370z?

Asked by Sep 02, 2017 at 11:24 PM about the 2010 Nissan 370Z Touring

Question type: Maintenance & Repair

I bought the car a couple months ago. Loved it. Last couple weeks I've
noticed there is a hesitation when accelerating/loss of power. I've noticed this
by listening to the "Noise" of the car. Each gear I would shift I would hear my
car at 3,000 RPM to shift gears. Now I'm noticing to drive to around 3,500-
4,000 RPM's to get the same sound/shift with not as much power.

Before the problem- 1st to 2nd at 20 MPH 3,000 RPM
                                 2nd to 3rd at 30 MPH 3,000 RPM
                                 3rd to 4th at 40 MPH 3,000 RPM
                                 4th to 5th at 50 MPH 3,000 RPM
                                  5th to 6th at 60 MPH 3,000 RPM

After problem- 1st to 2nd at 15 MPH 3,000 RPM
                        2nd to 3rd at 25 MPH 3,000 RPM
                        3rd to 4th at 35 MPH 3.000 RPM
                         4th to 5th at 45 MPH 3,000 RPM
                         5th to 6th at 60 MPH 3,000 RPM
Basically I need to raise my RPM's another 500-1,000 in order to hear the
noise and reach the MPH to shift to the next gear.

Before the problem all I did was add spacers to the tires and get an oil
change.

Experiencing this problem I did the following to help:
-Change the Air filters
- Cleaned fuel injectors
- Added an exhaust
- Changed out all 6 spark plugs (helped with hesitation but not power)
- Checked any vacuum leaks

No one seems to know what problem this can be but knowing my car I know
there definitely is a problem. There was a mis-fire P0300 *Pending* code but
after I erased it last week it never came back.

Any idea what it could be?
62k miles

No answers yet

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