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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.

Rough idle 2 mins after cold start

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Old Mar 3, 2020 | 10:58 AM
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TAINTER's Avatar
Senior Member
Joined: Sep 2008
Posts: 6,126
From: SE Michigan
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Originally Posted by Rolltide
Found fix to idle issue. Replaced EVAP purge control valve and now idles fine during cold start.
THANK YOU for coming back and letting us know what worked to fix your symptoms!
Most don't.
So it's a guessing game for the next person who has the exact same symptoms.
 
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