Whenever I start my Ford Tourneo Connect 1.8 TDCI 2004, the glow plug indication light at the gauges, lights up for 2 seconds and turns off. Clearly it is not a sufficient time period for the plugs to heat up in cold weather hence, the starting is difficult. Do you have any idea why is that?What part sets the heating time? Is it the relay? is there a timer somewhere ? Is it managed by the ECU? Could the plugs be faulted (although I have replaced them 2 years ago)?
Thank you in advance
Josef