98 Ford Windstar GL

Hey There! I have a 98 Ford Windstar with 83,000 miles on it. Bought it 4 months ago and about a week after I bought it the Trac Off Light started flashing. It seems to happen when I'm going down hills or when it hits a bump on the right side. Pretty much every time I drive it! It is very annoying. The only way to get it to stop is to turn the vehicle off and then on again. I have brought it to the shop twice now. The first time he replaced some ABS sensor in the right rear and the second time I don't know what he did (hooked it up to some machine, ordered a part, put the part in under the hood somewhwere). But it continues! Any suggestions as to what this might be?:frown:

that's exactly what it is, the ABS wheel sensor is the problem. I have the same thing happening I have yet to fix it.