Hello People, just replaced mine,the pin was a bugger to get out but came out in the end,the plug connector is realeased by pushing on 1 side and upwards ,the sensor came out after soaking the day before with WD40 i used a pair of Mole grips from underneath the car to wiggle the sensor whilst pushing on the mole grips with a hammer came out in about 10 minutes.To fit new sensor lubricate with oil and insert into hole making sure pin hole is on correct side,i then pushed sensor in using the rubber handle end on my hammer connect plug and all done. Symptoms before were very slow acceleration 0-60 in about 20 seconds,loss of speedo and radio still playing but going quieter until speedo recovered.Hope this helps others.