1998 1.6 Crankshaft Sensor - trevorw
Where do I find crankshaft sensor - no mention or diagram in Haynes Manual?

Is it difficult to replace?
1998 1.6 Crankshaft Sensor - Andrew Moorey (Tune-Up)
Stand by the passenger side front wing the gearbox is nearest you (assuming its a K series) the sensor is on the right hand side of the engine as you are looking at it low down and is inserted through the crankcase web where the engine and gearbox meet in a horizontal plane above the offside driveshaft. It has a short lead which plugs into a blue coloured plug which you may see quite easily amongst the coolant pipes running across the end of the engine and round the side. Its held in with two bolts (8mm hex) but can sometimes be a swine to get out. Use a squirt of wd40 and try to get the sensor to rotate before pulling it out towards the offside of the engine bay.
Phew!