My 1996 Sidewalk has had problems with starting over the past 11 months of my ownership. When she runs she runs perfectly but sometimes just fails to start. Starter cranks but nothing, and the problem seems to getting more frequent. I have long suspected the Immobiliser system, might be the problem because often in the early days I would arm and then disarm the immobiliser to coax the engine back into life, but recently that no longer seems to work. I recently invested in a cable to connect up my laptop and “MEMS gauge” throws up a” coolant temperature sensor” fault. I can hear the fuel pump initially priming but when it doesn’t start I don’t hear the pump again.