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Weird rev after foot off gas - need help

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Old May 23, 2012 | 09:20 PM
  #1  
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From: Pen Argyl, PA
Exclamation Weird rev after foot off gas - need help

Hey everyone,

I recently found an engine and a shop to put an engine in my car and I came across a weird issue.

Problem - when I tap the gas very lightly, there's a slight delay and when it revs, it's around 2k. I can tap the gas pedal, move my foot away (to the point where it's by the seat, then it revs to about 2k and sticks for a quarter second. It's perfectly fine and responsive when driving normally other than the fact that one o2 sensor needs to be replaced ( it's pulling a downstream o2 code since one of the sensors busted while putting the test pipes on )

Possible solutions - the vacuum hole right by the throttle body is plugged and the evap sensor hole is open on the bottom and other two might by messed up, I'll post a pic tomorrow.

It's an 03 body with an 06 non-rev up engine

P.s. if anyone has a vacuum diagram or even a picture of their vacuum setup on the back of the plenum, it would be greatly appreciated.

Sorry, I'm still a bit new to the forum, I rarely post anything, and I'm not sure if this is a repost.
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Old May 24, 2012 | 03:01 AM
  #2  
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DavesZ#3
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Did you do this along the way... https://my350z.com/forum/6008226-post2.html
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Old May 24, 2012 | 10:10 AM
  #3  
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Thanks a lot, I just did all three procedures now, but on the last one, I didn't see any light blink or come on, however, it's a lot better than before.

It's still a little "too much rev for a tap" in my opinion, but I'm so **** (giggity) when it comes to my car that it might just be me beyond this point. Regardless, thanks for the big help!
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