Add a little flavor to the broken CV Joint on the front driveshaft I've been working on getting resolved. Driving on the highway the other day, went to pass and give it some gas ... got some odd hesitation on from the trans (holding 10th ... not really wanting to kick down). Pushed a little harder, and got a "low oil pressure" warning on the dash - along w/ some odd turbo boost pressure readings (fluctuating mid-high range). Pulled off immediately, shut her down, checked the oil level and looked for a telltale blood trail. Nothing seemed off ... restarted and the pressure was in the green, no CEL or continued pressure warnings. Headed right home. Similar event - stopped again - all looked normal. Trying to merge back on, got a stutter and a CEL. Code reader showed misfire on cyl. 6. Also showed oil pressure was mid-40s at part throttle on live data. Just got to the mechanic and they found the driver's side valve cover cracked (laterally) across the entire width. Best they can surmise is that's causing a vacuum leak, which would cause the trans/motor to go into a "protect" mode, which is causing the trans to limit hard downshifts. The coil pack on 6 was bad, so that's the misfire. The oil pressure sender/sensor likely bad too... no pressure warnings on live data or since. Fahhk - man. Never heard of a valve cover cracking under normal useage - and at 69k miles. Had to drive down there and see it to believe it. Anyone dealt w/ this? A little shout-out to the My Ford App, i was messing around w/ that this morning and found all these error codes in plain language. Not only were they there, but they were more complete than what my code reader could pull and my brother-in-law's Apollo code reader had. There was a code for a bad oil pressure solenoid along w/ the misfire and oil pressure warnings. Which is what we'd guessed at. I was able to source the oil pressure switch at a local Ford dealer for $30 ... my mechanic got me a driver's side valve cover kit and a coil pack so (crossed fingers) this gets me whole.