My father a 1989 Chevy Truck with a 350 engine, maunual transmission and 250,000+ on the speedometer. He sudenly has a no spark and no fuel to TBI problem. The engine cranks over so not a battery problem. I checked and replaced his dist. Cap, coil and the ignition moduel but still no spark and still doesnt uncover why there is no fuel going to the TBI though the fuel pump is working. I am thinking the ECM went out yet need another mechanics opinion. Thanks for any additional ideas on what is causing this.