loping engin

2002 CHEVROLET TAHOE
116,000 MILES • V8 • 4WD • AUTOMATIC
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CMFB
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  • 2 POSTS
my chevy tahoe 2002 5.3 flex fuel has a slight lope when at a idle ive read that most likley cause is the egr valve sometimes it hesatates when first excelerating
Jan 29, 2011 at 9:03 PM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
You can easily remove the EGR valve to inspect it and see if the pintle is being held open by a chunk of carbon or not. I would also check it carefully for any vacuum leaks.
Jan 29, 2011 at 9:12 PM
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CMFB
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thank u for the advice i went a head and bought a new one since the tahoe has 116000 miles and i bought it used and it probaly has not ever been checked or cleaned had it in to burt chevy in littleton co when i first bought it and they did the intake manafold gasket and injectors and some other warrenty work thanks again, cmfb
Jan 30, 2011 at 3:24 AM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
That's fine but it would have been nice to know if the old one was closing all the way to confirm that you found the problem. If you haven't changed it yet, look at the old one when you remove it and see if the pintle is seated all the way.
Jan 30, 2011 at 3:28 AM
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