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The car is not throwing any codes, on the dash nor readable to code readers. but this afternoon right before i turned into my neighborhood as i was slowly accelerating
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12-24-2014, 07:08 PM
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#1 (permalink) |
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Enthusiast Member
Join Date: Sep 2013
Location: Denver
Posts: 288
Drives: 2010 370Z
Rep Power: 11  |
misfiring
The car is not throwing any codes, on the dash nor readable to code readers. but this afternoon right before i turned into my neighborhood as i was slowly accelerating the car felt like it misfired like crazy. it would not accelerate. after i let off the gas it went away and i could speed up again. this is the first its ever happened. 2010 with 63k miles. just got tuned by uprev about a week ago. also have injen intakes, FI HFC and topspeed catback. any ideas on where to begin? flashing the ecu back to stock perhaps?
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12-24-2014, 07:17 PM
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#3 (permalink) |
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A True Z Fanatic
Join Date: Jan 2009
Location: Socal
Posts: 10,203
Drives: WOT
Rep Power: 5850  |
Without a code it's tough to say what happened. Car feels normal now? Put some more miles on it and if it happens again go back to your tuner.
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638WHP 541WTQ @ 13.5PSI
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12-24-2014, 07:21 PM
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#4 (permalink) |
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Enthusiast Member
Join Date: Sep 2013
Location: Denver
Posts: 288
Drives: 2010 370Z
Rep Power: 11 |
i had it etuned by Z1 motorsports. i havent driven over 3k rpms when it has happened. it happened very quickly a few other times while slowly getting up to speed. it felt like the brakes cut in sharply for a half second then went away. it was only that one time where it was very bad. i havent noticed any kind of pattern. seemed to do it while it was hot and cold.
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12-24-2014, 08:21 PM
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#6 (permalink) |
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Track Member
Join Date: Dec 2009
Location: Farmington, Utah
Posts: 582
Drives: 14 SR 370z 6MT
Rep Power: 10139 |
^^ Agree with you on this one. Just keep driving until it happens again and or until your Z throws a code.
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Ford Diesel and Heavy Line Technician at your service. 
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12-25-2014, 11:52 PM
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#8 (permalink) |
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A True Z Fanatic
Join Date: Sep 2010
Location: Crooklyn
Posts: 1,008
Drives: 370Z 6psd-sport-pkg
Rep Power: 20 |
Yeah that loud bang, now misfire code definitely ur coil pack.
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Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you.  537whp/496lb/tq@8-9PSI 93 octane
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12-26-2014, 08:18 AM
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#10 (permalink) |
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Premium Member
 
Join Date: Nov 2010
Location: South Arkansas
Posts: 8,435
Drives: 2014 Challenger
Rep Power: 324197 |
I'd first look for any outward signs of damage to the coils - bulging, charring, &c.
An ohmmeter may tell you which one is acting up but, if it is intermittent, can be difficult to catch.
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