The magnet for the camshaft position sensor may fall out of its mount and damage the synchronizers. This causes long crank times when starting the engine and may cause the Check Engine Light to illuminate. If this happens, both the magnets and the synchronizers need to be replaced.Google+
Car Problem Reports
Ford Ranger Camshaft Sensor Magnet May Damage Synchronizers
Ford Ranger Problem
Engines Affected: 3.0L V6, 4.0L V6
Average Mileage: 120,911 mi (78,000 mi - 220,000 mi)
Replaced Sync and Sensor. No more squeak, but now 'Check
Engine Light' stays on. Never came on before.
Visitor, 1998 Ford Ranger, 4.0L V6, 92,000 mi
Engine would crank, but wouldn't start. Intermittent condition for months. Engine ran ok if it did start. Replaced camshaft position sensor. No problems since!
Visitor, 2001 Ford Ranger, 4.0L V6, 220,000 mi
Its not fixed yet. But having same cranking propblem of long time to crank. Also bulks on the roads
Visitor, 1996 Ford Ranger, 4.0L V6
It will not pass smog due to the camshaft being out of adjustment
Visitor, 1999 Ford Ranger, 3.0L V6, 78,000 mi
just started with problem 2 months ago was looking for problem found it when i read repports.
Visitor, 1998 Ford Ranger, 4.0L V6, 128,000 mi
magnet in camshaft sensor came apart and ruined the shaft.