I am having a problem with my C3 in that the engine light is continuously lit. Last week I had some problems when the light first came on as the car was a bit juddery. It turned out that the emission coil needed replacing and that seemed to be the end of it. However, yesterday the engine light came back on. The car is handling normally and I have driven it without any problems but the light has stayed on. I just wondered if this has happened to anyone on the forum before or if anyone has any suggestions. Thanks.