Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

sputtering on acceleration

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Old Oct 21, 2021 | 04:35 PM
  #1  
dravid's Avatar
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Default sputtering on acceleration

hello all I have a 2007 h3 with the 3.5 I5 its starting to sputter on accelaration any ideas as to what may be the issue
 
Old Oct 21, 2021 | 05:10 PM
  #2  
hummerz's Avatar
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From: C-Town
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Any codes? If not, start by checking fuel pressure, inspect spark plugs, check air filter & clean maf sensor.
 
Old Oct 22, 2021 | 10:17 AM
  #3  
Doc Olds's Avatar
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Joined: Jul 2007
Posts: 13,090
From: Boat Town USA MI
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Review the linked H3 FAQ section thread about what to do if running rough with no codes. 07s have the 3.7L.

Acts like it wants to stall/rough idle -No CEL -What To Do:
 
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