I changed three coils and crankshaft postion sensor. Here is some history. My vechile would not start one night while I was out. husband changed the coil and it started right up, lasted less than a day. change the coil again started up and ran for about 3-4 days, dead while traveling at highway speed and start and ran .25 of a mile. and would start again. changed the crankshaft sensor and a new coil and started running again. it is running now but running like it wants to die. I am getting frustrated. I want my truck back and give my husband back his work truck. PLEASE HELP A WOMAN IN NEED!