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I hope someone can guide me in the right direction with this. I have a 1.0 mpi 2001 51 plate blue lupo that had an engine management light issue which turned out to be leads n plugs after and a stuck EGR valve. Fault codes p0404 p0302. Leads were replaced and EGR valve cleaned and all codes cleared. I noticed a longer than usual turnover before the engine fired after these problems were fixed and managed for a good week being able to fire the lupo up and get about ect, but as times gone if left over night struggles to start. I managed to bump start it only the other day after priming the pedal ect and once running would start after a few hours fine but left overnight was faced with the same issue of a non starter just turns over but doesn’t fire almost does on occasions. So I diagnosed and brought back a pending code p0321 which I believe to be the crank sensor or speed sensor? I’ve located it but I don’t know how to fully reach the part I’ve got as far as taking off the filter housing (removed battery) I have the new part crank sensor and hoping that I can fit this myself with some help and knowledge of how to remove the old one. I’ve found the connection for it but the crank end seems to disappear into the crank body? What is my next step moving forward. I’ve attached a photo of something else I’m not too familiar with it’s a white plastic cap that appears to be open below the coil should this be open? Also the bottom picture is I believe the location of said crank sensor. (Not my engine)

help my 1.4 16v lupo s wont start pluged it in to fault reader and it said engine speed sensor no signal so i went about changing the sensor but when i came to plug the new one in i realised something was a bit werid the crankshaft sensor cable seems to go down in between the engine and gearbox as in its between to flat surfaces being pinched i was hopeing to follow the cable to find the sensor and change it , anyone know the sensor loacation ?? or just wana see the pic of the wire hahahaha