2004 Chevrolet Silverado High idle all the time

2004 CHEVROLET SILVERADO
97,000 MILES • 5.3L • V8 • RWD • AUTOMATIC
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DEVELOPER7
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  • 42 POSTS
My engine idle is running too high. I try to kick it down by revving it a little but it stays at around 1200 rpm no matter what. Is there anything I can check to fix it? It was running fine. I have heard that vacuum leaks can cause the idle to surge but I can't seem to find any vacuum lines. Thanks for your help.
Aug 20, 2014 at 10:44 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Throttle valve could be dirty try cleaning it and see what happens plus vacuum leak
Aug 20, 2014 at 11:39 AM
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