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 Misfire

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Old Feb 3, 2021 | 01:26 PM
  #11  
hummerz's Avatar
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Get your truck outta there asap, and do not pay them a cent for their diagnosis.
 
Old Feb 3, 2021 | 07:04 PM
  #12  
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Plus 1 on Hummerz call. Your Stealership is attempting to play you...
 
Old Feb 16, 2021 | 01:47 PM
  #13  
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Originally Posted by wpage
Plus 1 on Hummerz call. Your Stealership is attempting to play you...
Did you guys not get the memo on the early 2006 3.5L valve seat issues?
 
Old Feb 16, 2021 | 03:10 PM
  #14  
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Nope
 
Old Mar 18, 2021 | 03:23 PM
  #15  
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Default New Problem on Misfire

We got the H3 back from the dealer and tore into it. The valves were leaking, the cams and roller followers were pitted like they were under water for a while and there were grooves worn into the cams. I got a rebuilt cylinder head from Clearwater Cylinder Head. Got it back together and have a code P0017, exhaust cam position- crank position correlation error. Is it possible for the cam phaser to go bad from not being bolted to the cam while I was waiting for the cylinder head? I locked the crank in place and used a tensioner holding tool to lock the tensioner in place. I used paint marks on chain and gears and assembled the way it came apart. I need to get this fixed. Give me an idea what to do next.
 
Old Mar 19, 2021 | 10:35 AM
  #16  
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From: BX NY North East
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you probably need to replace the
timing set and gears timing set and gears
or the head was shaved too much throwing things out of whack. but if you have a good scanner try doing a crank variation relearn first.
 
Old Mar 23, 2021 | 10:30 AM
  #17  
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I tried doing a variation relearn but the test was aborted because of fault code. I guess I'm tearing back into it.
 
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