27:th-Nov-2015, 23:30:40
When my egr valve got stuck open because of carbon (rac also hit it with screw driver) I got home no bother and had egr cleaned in an ultrasonic bath. I didn't get codes until rac bloke held revs on so the engine had to throw some code. What I noted was maf air flow excessive. Could yours possibly be something to do with air flow?
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