October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Engine Coolant Temperature (ECT) Switch

ECT monitors radiator coolant temperature and signals the ECA. The switch is threaded into the lower part of the radiator. The ECT signal affects the air/fuel ratio, EGR flow and ignition timing (turbo engine).