I had the same problem with My Jetta but this morning i just went out to the Garage and checked if i hooked up something wrong and what i see is that the temp. sending unit was switched with the AC Cluch sending unit and i just switched them back and the cat is good to go. Now i have to fix the Ignition Problem and i know i will do it for sure. This car is a master Peice and i Love it.
