Originally Posted by 00Ranger4digbeast
crankshaft position sensor camshaft postion sensor or crank seal.....CPS could mean a million diff things thats y i said uhhhh OK
Actually, Ford's abbreviation is CMP (Camshaft Position) Sensor and it is driven from the camshaft by a geared shaft and housing assembly called the Synchronizer. At high miles, the Synchronizer drive can fail which is bad news in itself. The much worse news is that the Synchronizer also drives the engine's oil pump.
The final failure is usually a partially or fully seized Synchronizer shaft and stripped drive gear(s)....AND a seized engine if it isn't caught immediately
, there is an early warning sign that the Synchronizer is in trouble. There might be a squeak or chirp as the lube dries up and the Synchronizer begins the seizing process. Except for its location, this noise could easily be misdiagnosed as a belt chirp.
The CMP/Synchronizer combination is usually found on Ford coilpack/pushrod/SEFI engines. Examples used in RBV's are the 3.0, 4.0 OHV and 5.0 Ranger/Explorer engines from the last 12~15 years.