Quote:
Originally Posted by EigenGuy
Final (hopefully) update:
Thank you Rusty for the guidance. I disassembled the timing chains again and figured out the issue. Apparently, the early 2013 model exhaust sprockets did not have the small triangle indicator stamped on the front to help align the drivers side sprockets during assembly. I was able to figure out the proper alignment and assembled everything were it needed to be. Once complete, I fired up the car and still had the same codes. I ordered and installed another (used) ECM and the codes have not returned after about 70 miles. To me, this confirms a ECM replacement is actually necessary even after solving the mechanical defect. For those considering doing this job yourself, it is not for the faint of heart. It required about 30 hours of work and significant studying time, not to mention a fair amount of dough for parts, fluids, and specialty tools.
My thought process here is this: force equals pressure times area. What if JDL's uel design is the perfect length to create a resonant PRESSURE wave FORCING the surface AREA of the exhaust valve open? This would stress the valve spring and therefore the variable valve timing components pushing the retention plate out of it's peened-in spot. Again, just a hypothesis based solely on a lot of reports of folks throwing these codes right after installing the UEL headers.
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That's odd, mine had the triangles stamped on all 4. Glad to see you got it back together.
Quote:
Originally Posted by TheStig85
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Seems like most people, including myself, are willing to just spend the money for the ECU in order to get rid of the light immediately. It's already a small group of us willing to tackle this problem ourselves, even fewer are willing to wait a few thousand miles with no real picture of where the cuttoff is.