2008 ISX major turbo squealing

[389guy]

(08-14-2016 )Signature620 Wrote:  Your EGR valve must be stuck open (will still read closed on INSITE). There's nothing wrong with the bolt and washers, but you should also use a blanking plate in the end of the exhaust manifold to stop exhaust running around to the valve.

I was thinking the same thing, that the EGR must be stuck open. I'll have to make up something to block the cooler then.