4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

weird vibration

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Old 04-02-2008, 07:36 PM
  #1  
timeformiller44
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Default weird vibration

99 GT...between 1000-2000 RPMS it has a pretty decent vibration...sitting at idle...u can feel like the car shake...and its not bc of power or w/e its a weird vibration... thought maybe bad crank pulley (balance for crank..) changed it...vibration didnt change....could it be a misfire bc the car doesnt do it like it does when driving..when driving u can feel it but not nearly as bad as idle and reving it...
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Old 04-02-2008, 07:50 PM
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02 Ninja
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Default RE: weird vibration

Bad plug maybe bad COP. Find a nice day and get under the hood.
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Old 04-02-2008, 10:07 PM
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timeformiller44
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Default RE: weird vibration

its not misfiring tho..hooked up a scanner i have..am able to read misfire data...no misfires...and the vibration goes away about 2000rpms.... only between like 1400rpms and 1900-2000rpms and then its gone... and its not present under 1400 rpms either
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