I have had this problem for ages. Car starts and I go a short distance, stop, go away to drop kids off or other then come back and car won't turn over. Usually if I leave it for 10 mins or longer it will start but today I cannot get it to turn over. It catches but nothing happens. Have called out AA but I have this problem all the time. EML light on all the time - have taken it to garage about 7 times and they replaced engine ptentiometer and that made alot of difference but now the weather is really cold again it has gone back to doing same thing. It is a 2000 X reg, any ideas - am at my whits end - LOVE my car but it is driving me insane!!!