I didnt know that was a viable option to test an alternator on any car.... That said, the best way to test an alternator on our car is with a volt meter. Take all readings at the battery's terminals. First, with the engine off, you should read about 12.5 volts. Start the car, and the voltage should go up to 14.5 volts. Turn everything you can on (ie. lights, brights, fog lights, radio...) and the voltage should not go under 14 volts at idle. Rev the engine up, and it should jump right back up to 14.5 volts. If all that checks out, the alternator would be fine... -Nick

"Moore has also accused the American people of being the stupidest, most naive people on the face of the Earth. And after last weekend, he's got the box office numbers to prove it!"