had car to mechanic did a top engine rebuild since then starts rough and biggest issue is at wide open throttle while in the middle of shifting engine dies dic says reduced engine power , service stability, service traction control check engine light on p0068 p0069 codes i took car back to mechanic 4 times cant find vacuum leaks sensors voltage ok cant seem to find the problem i give up
also drives fine otherwise also this all happens in drive if i put in M for tap shift doesnt stall at full throttle doesnt die at all in M mode HELP HELP