Mechanics

HI THERE. I HAVE A . I DON'T KNOW IF IT NEED SPARK PLUGS OR MAYBE A COMPLETE TUNEUP BUT WHEN PAUSING IN TRAFFIC IT SEEMS TO SLOW DOWN IN IDILING AS IF IT WANTS TO CUTT OFF.

2006 Hummer H3 • 11,200 miles

It kinda slows down in idiling when stopped in traffic
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Ms. E
April 12, 2012.



With 11K miles, it shouldn't need anything. However, if that should be 112,000 miles, check for vacuum leaks and check the IAC.