Botanic Posted April 17, 2020 Report Share Posted April 17, 2020 My 1.4 Lupo is having a hard time starting when cold. The engine dies at once the first time I turn the key. The second time I turn the key the engine dies a second later than the first time. The third time still a little later, until after maybe five times it doesn't die. The idle is very unstable, and the engine dies if I press the throttle. Once I get to this stage that the engine idles and doesn't die, I have to wait half a minute or so before I can drive from the parking lot without the engine dying. This happens every time I start the car when the engine is cold. But there are no problems starting if the engine is warm. I can drive a few minutes then park and start the engine without any problems 30 minutes later. I have not noticed any problems while driving. Where should I start looking? Anyone experienced the same symptom? I don't have anything to read fault codes with. Quote Link to comment Share on other sites More sharing options...
mk2 Posted April 17, 2020 Report Share Posted April 17, 2020 (edited) Temp sensor? Most likely. It's a fuelling fault, where the mixture is leaning out. The ecu in it's wisdom has decided to provide the wrong amount of fuel injection... Throttle sensor (TPS)? Vacuum/manifold leak? Sticky fuel pressure regulator? Fuel pump? Fuel filter? Edited April 17, 2020 by mk2 Quote Link to comment Share on other sites More sharing options...
Botanic Posted April 17, 2020 Author Report Share Posted April 17, 2020 Thank you mk2! Looking at this video about replacing the temperature sensor, I realized that I have replaced it once many years ago. I will give it a try once I have found a new sensor. Quote Link to comment Share on other sites More sharing options...
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