Andrew

I am experiencing problems with my 2010 ford transit connect. When turning left my van looses its power nut does not cut out. The van will speed up again after the corner. When it happens the abs light will illuminate and the display reads esp malfunction. Today i have cleaned the abs wheel sensors and contacts with switch cleaner but the problem still exists. How do i find out which sensor is faulty? ( so i dont buy 4) Will a new sensor fix my problem? Thanks