High idle, increases over time

Chrysler Aspen 2007 4.7 196547 miles
Idles 1500 rpm and increases to 2200. Doesn't idle down
CG28tech from United States 3 months ago  
CG
1 reply 
CG28tech from United States 2 months ago
I've heard it's a vacuum leak allowing air into the intake. As of yet I'm unable to verify that
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