Join Date: Mar 2010
Location: Mobile, AL
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I checked the shaft play thoroughly and it feels completely fine.
My thoughts after driving around for awhile with it like this, and NO CEL, is that my VGT is somehow malfunctioning.
At seems to be stuck in certain positions and non changing. I drove around town with no problems. I hit the interstate doing 70 and the turbo was weird. It would build boost and it seems that it would stay at max boost even though I'm only doing 2k RPM. With the cruise control set on a flat road, my wastegate would open and do the "turbo fart" mid drive. Not letting off the accelerator pedal or any type of accelerator change at all. It did this a few times.
If I hear nothing else on another type of fix, I'm going back to the 15w-40 oil to just see if the more flowing oil is causing this problem.