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Motor hesitates after start up only

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Old Jun 3, 2015 | 11:24 PM
  #1  
JBoyle997's Avatar
JBoyle997
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From: N.J
Default Motor hesitates after start up only

My 02 Z06 hesitates only after I start it right up, and only if I hit the gas. So lets say I start the car and its cold. It idles fine, but when i back it up and give it some throttle I get hesitation..almost like a delayed throttle response. As i back it up out of the garage and give it some gas it almost sounds like it has a small cam in it. Let the car warm up for 1 minute and hit the gas again and it acts completely normal. Interesting thing is its not only when the car is cold. So if I drive for a while and i'm at full operating temp, turn the car off and start it back up..same thing happens. Then in a minute or two it goes back to normal. I'm thinking maybe its loaded up a little bit with fuel? Plugs look fine. Mods- Intake, Headers and tune.
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Old Jun 5, 2015 | 08:47 AM
  #2  
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dadaroo
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Pull your dash DIC codes and see if something is showing. If you haven't done that in a long time (or ever) then record them and delete them and see what comes back.

If you don't know how to pull codes let us know.
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Old Jun 6, 2015 | 12:21 AM
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Boss75
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I'll bet it's in your tune. My car did that on my first tune. The tuner re-adjusted at my request and no more hesitation.
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Old Jun 7, 2015 | 09:16 PM
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JBoyle997
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From: N.J
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I think its in the tune as well I/m going to have the tune looked at. Having trouble pulling the codes because I have Pull key and service column lock messages.
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