'96 Taurus Vulcan, Mil came on and first time it said EGR valve. Replaced it. MIL again and it said MAF, replaced it. MIL yet again for Camshaft Position Sensor, replaced it. It was cracked and needed replacing, as for the other 2, I couldn't tell you. Now MIL again and it says Camshaft Pos still. Please help!!! Thanks, David.