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.

H3 Redyced Engine Power

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  #1  
Old 09-29-2021, 05:21 PM
Blinker1's Avatar
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Join Date: Sep 2021
Location: Sumiton, Ala.
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Default H3 Redyced Engine Power

Have the dreaded reduced engine power. Have installed new throttle body and cleaned mass air flow with no results. Any suggestions please?
 
  #2  
Old 09-29-2021, 05:56 PM
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Can't help without codes!




 
  #3  
Old 09-30-2021, 09:17 AM
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Location: Boat Town USA MI
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Welcome to HF.

Post up the codes, that can come from many different problems, most of which ain't rocket science. Add to that year and MILES, any recent work done before the problem started.
 

Last edited by Doc Olds; 09-30-2021 at 09:22 AM.
  #4  
Old 09-30-2021, 09:21 AM
Doc Olds's Avatar
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Please do us all a favor, READ before Posting. AVOID the H3 FAQ Section just like it says in the 3rd from the top Sticky Thread "Do Not Post In This Section." Yours ain't even close to an FAQ.
 
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