OK so iv posted a thread about my P0321 code once already iv done the searches. So here is the break down got the P0321 code i replace the crank sensor iv also replaced the cam position sensor. Also the car runs great with the code on. So i clear the code i drive about 80 miles everything is good. I pull over to grab a bite to eat turn the car back on and poof engine light is back on same code and the car runs fine. So im thinking bad ground? Any suggestions.

Thanks Paul