I've this problem that happens just for few days every year then it just disappear for months. Problem is that I'm going to start the car, it starts, then I here click from relays and car dies. I've to try 10/20 times (starts,click,dies) until it starts and keeps running. It just happen for few days then disappear and re-appears maybe one year later. What do you think could be the problem? It sounds like electric gremlins to me. Just changed spark plugs, air filter is ok, fuel filter too.