I just bought a Gs 300 1994 6 cyl. from a friend . It turned off on him 2 weeks ago , he towed it to a shop they took too long to look at it .He went to start and it started drove it about 2 miles and shut off . I looked at it and had no spark. I had coil tested (good) and got a 196 ignitior from junk yard no help! has anyone have any suggestions .