Been having issues with my used 2008 Mazda 3 hatchback starting for the past 3 weeks. The car cranks but it won’t start unless I press the gas pedal. In fact, if I don’t press the gas pedal than the dashboard will light, it sounds like it’s about to start but then everything shuts down again. Any ideas on what it might be? And was it an expensive fix? The CEL is not on, nor do I have the error codes yet.