please help!!!!!!!
 

2007 coupe A6 .......
Had a timing chain failure on a crankup. Wasnt much damage so I put the car back together with all new parts .

Ok car is back together runs fine but as I drive and cars heats up when I cuts it off and starts it back up its thows a p0334 code and the rpms tach stops working and car runs with a bas misfire.

Let car sit awhile then it goes back to normal when code is clear .changed the crank sensor still has the same results . When the crank sensor was changed the reluctor wheel was check to see if it was loose or out off place but checked out fine.

Man im at the end of my rope lol any I mean any input would be much appreciated.