george4165
13-04-2009, 04:15 PM
Have upgraded engine in my 1.0 Mk4 Polo to a 1.4, do I need to change the ECU as it is running OK, a little bit lumping on tickover. On original engine the head gasket had gone and the clocks were displaying jumbled mileage reading and oil light would come on and buzz, and is now doing the same. Would nthis be an ECU problem or faultly clocks. Not sure whether I need to change ECU, speedo or both! Cheers George:o