Chevy Express Repair Question :: 2001 Chevy Express  EGR


Author: smetz
Subject: 2001 Chevy Express  EGRPosted: Mon Oct 18, 2010 1:06 pm (GMT -5)

Engine Performance problem

2001 Chevy Express  V8 Two Wheel Drive Automatic 330000 miles



My van all of a sudden started stumbling and showing a loss of power (only at mid-upper rpms).  Check engine light came on, so I took it to autozone and they gave me p0401.  I have researched this and researched this, changed out the egr valve.  I have read about vacuum lines being clogged-I believe mine does not run on vacuum.  I read about carbon build-up--I saw some, but only around outside edges, didn't seem bad to me.  I am guessing that it might be the sensor for the egr valve, but don't wanna play change this, change that.  I have a fluke voltmeter, if it can be used to check the sensor, but don't know how to check it.  This van has 330k on it, and I want it to see 1000k because I am a poor floorman that cannot afford a new van; so i do my very best at fixing/maintaining it.  I have some training from UTI also, but like I said I am a floorman now.  Your input is greatly appreciated.  

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