#2 · Nov 29, 2015 Crank/Flywheel sensor on the Flywheel housing. Max of 4000 maybe a boost issue or possibly the fuel lift pump. MK4.5 TDCI 140 Business Estate. MK3 FUSE INFO CLICK HERE http://www.fordwiki.co.uk/index.php?title=Fuse_&_Relay_Information_-_Mk3 FORD WIKI CLICK HERE http://fordwiki.co.uk . 2002 MONDEO MK3 LX TDDI 115PS 2008 MONDEO MK4 ZETEC 1.8 TDCI 125PS just bought a few weeks back. currently having electrical issues also issues with my brakes feeling very spongy all of a sudden! ENNu.