Loping engin

CMFB

MEMBER
2002 CHEVROLET TAHOE
V8
4WD
AUTOMATIC
116,000 MILES

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

Saturday, January 29th, 2011 AT 9:03 PM

3 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

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.

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Saturday, January 29th, 2011 AT 9:12 PM

CMFB

MEMBER
2 POSTS

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

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Sunday, January 30th, 2011 AT 3:24 AM

WRENCHTECH

MECHANIC
20,761 POSTS

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.

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Sunday, January 30th, 2011 AT 3:28 AM