Question about 2006 Hummer H2

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Hummer h2 idle rpm too low

I have a Hummer H2 with to low idle like 4-500 rpm and when I put D. It's dies or almost. How can I lift idle rpm by myslef.
Thanks Peter from Hungary

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I can't solve the problem but was hoping you found the answer. I have a 2003 Hummer H2 and I am having the same problems if started in park or Neutral it will idle fine but if I put it in drive or reverse it will not idle

Did you find the solution and if so could you email me the fix.

tdunham@drainageplus.com

Thanks,

Troy

Posted on Jul 30, 2009

  • Smurf Sep 25, 2011

    Clean the T/B plates Remove the air intake tube at the T/B. with the key off you can open the plate by hand, clean with a T/B cleaner or carb cleaner, use a rag if needed. In some cases after cleaning the idle will be to high. disconnect the battery for 15 min. start let idle for 5 min with a/c off.

  • cecil wilson Feb 25, 2013

    Yes I had this problem...it was stalling at traffic lights/and when I slow down to make a left turn. I took out the trottle body completely ,and cleaned it.I then added fuel system cleaner,and it worked like a charm.I took it to the dealer first,and they weregetting nine different codes..they wanted to change..catylitic conv,thermopstat ,trottle bosy$3000 bill..did it for no cost$2.99 cleaner .

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