I have a 97 sonoma that will crank over but won't start. Originally bought the truck guy said it needed a fuel pump but I jumped the relay and truck wiuld run tried hooking up scan tool it wouldn't link.so I fig I woukd replace the oil pressure switch I done that.now the truck has No power to coil,ignition control mod,dist oil pressure switch or crank sensor cleaned up all the grounds all the fuses are good and both ecm fuses have power