Can dirty oil cause a check engine light
Registered User
Joined: Apr 2003
Posts: 1,188
From: Western New York
like injuneer said get it scanned, but test your egr valve. with the engine running push in the diaphram on the egr valve. It should choke and start to sputter, if not replace the valve. But get it scanned anyway to make sure.
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dbusch22
LT1 Based Engine Tech
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Jan 5, 2015 07:14 PM