Before revision: Most of driveability issues can be traced back to a few issues: Bad ECM earth/ground Bad o2 /lambda sensor earth/ground Faulty Engine Coolant Temperature sensor (ECT) The engine coolant temperature sensor is located in the coolant flange,(under the distributor on the Polo Fox Coupe) on the front of the cylinder head (on transverse-engine vehicles).
After revision: Most of driveability issues can be traced back to a few issues: Bad ECU earth/ground Bad oxygen /lambda sensor earth/ground Faulty Engine Coolant Temperature sensor (ECT) The engine coolant temperature sensor is located in the coolant flange,(under the distributor on the Polo Fox Coupe) on the front of the cylinder head (on transverse-engine vehicles).