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engine surge

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Old Feb 9, 2014 | 11:51 AM
  #1  
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mparker200
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Default engine surge

I have a 2007 mustang 4L , when I drive around 60 mph at 2000 rpm's it will surge to 2300 then back to 2000 rpm's this just started last week , anyone know what it could be ?
Old Feb 9, 2014 | 01:36 PM
  #2  
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Nuke
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From: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
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Is it surging or is the tranny downshifting out of OD?
Old Feb 9, 2014 | 03:49 PM
  #3  
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mparker200
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Thats was my first thought . I disengaged O D ,and still was doing it only does it when your going 55 or faster
Old Feb 10, 2014 | 09:50 PM
  #4  
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flyhigh@mach1
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Slipping transmission...is it a manual or auto transmission?
Old Feb 11, 2014 | 07:25 AM
  #5  
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mparker200
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auto tranny , had the fluid changed and check out every thing ok
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