Monday Went out to start my truck and would crank and smoke but no attempt to start. So I went to ford and picked up a new cps and installed it, the truck fired with no problem and off I went I drove it about 200 miles total with several shut offs and restarts and had no problems at all I was picking up some farm equipment with my trailer. I went out yesterday and it did the same thing so I pulled the big relays in the fusebox under the hood and put them back, no help, no start, I then pulled the big relay under the dash on the top left handside plugged it back in fired right up and no problems. So Do you think that all the problems are being cause by just that relay and it may be needing replaced and that will fix it. Any info would be great thanks everyone in advance.