Hi,


I've searched every forum imaginable, and I am stumped by this problem. Just replaced turbos, car ran fine for 800 or so miles. Suddenly when I shift tiptronic trans into DRIVE, the ECU fuse (#29 30 amp) blows. replaced fuse, Scanned ECU, got a P0305. Started engine, car barely ran shuddering and misfiring at idle, and had something like 300 misfires in cyl. #5 within 20 seconds. As soon as I shifter car into DRIVE again, the ECU fuse blew, yet again. I replaced #5 Coil, car idles fine as long as the car is in "PARK", with zero misfires UNTIL i put the car into "DRIVE", then I get serious misfiring in Cyl. #5, but it doesn't blow the ECU fuse anymore. I did, however, notice that the #5 coil pack seems to get extremely hot. To sum it up. Car will idle perfect with zero misfires, as long as the transmission is in the "P" (park) position. But, as soon as I put the car into "D" (drive) the car starts seriously misfiring in cyl. #5. I can put the car in "R" (revers) and the car drives just fine with zero misses and plenty of power. I am stumped! Maybe something to do with tip trans? What would cause a short in coilpack # 5 when car is shifted into DRIVE, but not while idling in PARK, or shifted into "R" (reverse) ??? I could really use some help on this, as this is my daily driver. PLEASE HELP! Thank you in advance!