2001 Ford Taurus Engine stalls

Occasionally, my anti-theft light will come on and the car will almost stall. As long as keep my foot on the gas, it won't stall but if I were to let up, it will. I have scanned it several times and no codes come up. I have noticed that, it seems to do it when I hit a hard bump or take a corner. Just going down the street normally, it doesn't happen.

Light still comes on when I hit a big bump and car almost dies unless I keep my foot on the accelerator. It's probably a bad ground somewhere but I can't locate a wiring diagram to try and find out where it could be.

I have read several posts on the same thing and they all say scan it but, like I said, I have done it several times and nothing has ever shown up. I tend to think it may be a bad ground or something like that but I don't know where to even start to look. Anybody have any ideas?

Thanks.