I have a 300 S and when I brought it out of storage it started right up and ran fine, when I jumped in to go for a spin I stepped on the gas and she coughed and stalled. I had quite a time getting it going again but when it did go it would do the same thing. I managed to get it too the gas station and put in some high test thinking bad gas but almost never made it back. If I let it sit awhile it will start and idle but when I try to rev it up quick it will stall and be very hard to start after that. I will say it was working perfect when I put it away last fall. Anyone know where I could start to look? I will mention I think the alternator is not charging as the ABS is on and it tests as only putting out 12.6V. The low charge condition should not effect the engine running properly or would it? I have a new Voltage regulator to try to see if it is that or the Alt. itself.