Hello Scotty, I have a 2012 Volkswagen Routan it has a 3.6-liter V6 engine with 135,902 miles. My question is this, my alternator went bad one day so I went get a new one took off the battery post from the battery changed the old alternator with the new one put the battery post back on the battery the car started right up as planned took it for a test run everything seemed to be running fine & in order but when I put on my AC it started blowing hot air. Before I changed the old alternator with the new one my AC blew perfectly cold air but after I replaced the old alternator with the new one it never blew cold again. What do you thing happen Scotty? {black}:eat: