Ive got two related problems going on and I can't pin point the problem. The first problem is sometimes when I go to start the engine, I turn the key and nothing happens. I can start it by using a jumper from the battery straight to the starter and it will start and then everything is fine until the next time it happens. Ive had the solenoid replaced earlier in the year so I didn't think it was that but who knows. Now the second problem is lately, every so often I go to start the engine and it will start for 2 secs then shut off by itself. It will do so for like 5 times straight and then eventually stay running. Im thinking both problems may be from the same thing, like a safety switch or something. Please help.