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#1
08-20-2010, 04:32 AM
Hummer Novice
Join Date: Nov 2009
Posts: 19
2004 H2 running rough???
I have a 2004 H2 that has started running rough at higher speeds....it feels like it is missing or something. It hasn't pulled a code, so I don't think it is the O2 sensor...any ideas of what it may be? Spark plug? I am hoping to figure it out before it gets worse....
#2
08-20-2010, 06:28 AM
Hummer Professional
Join Date: Nov 2008
Posts: 261
Re: 2004 H2 running rough???
Could be plugs or wires. How many miles? Easy way to check wires is open the hood in the dark with engine running. If they are shorting out anywhere you'll see blue sparks. You should hear it too.
Another thing, how about the fuel filter? That is something that shows up at higher engine speeds. (needs more fuel)
__________________
2005 H2 SUV - Stealth Gray with Ebony interior - Third row - Exterior tire carrier -
Mirror caps - black bedliner
Roof rack rails - black bedliner
Wheels - Black bedliner on stock wheels
Gas cap lid - still chrome but will soon be black bedliner
Tail light guards - still chrome but will be black bedliner
Grill - Still chrome but will be black bedliner
Hmmmm, is there a pattern developing here?
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