1991 Oldsmobile 98 Regency Elite stopped running, would turn but no spark, was told to replace the crankshaft sensor. Did that & since then have also replaced the camshaft sensor, the coil pack & control module, the plugs & wires. Up until today it was still the same turn but no spark, now it does not turn at all it just makes a clicking noise.... I am totally stumped, thought it could be ecm or relay... PLEASE HELP!!