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SES Light/Rough Idle


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Posted

I have a 96 Tahoe and right when I start it up the SES light flashes for a minute or so then stops flashing and then just stays on while idling pretty rough.  I had been advised to check my EGR valve, which I did, and it was dirty but there weren't any pieces of carbon obstructing the pintle from closing all the way.  Is it possible the EGR valve could still be bad even without visible evidence?  What other things could be wrong?  I don't have a code reader and am trying to keep from going to dealer.  Any help is appreciated.  

Posted

I don't have a definite answer for you, but it is possible for the EGR valve to be bad, even though it seems to be good.

 

BTW, welcome to the site!  You are our 900th member!

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