Mass Air Flow Sensor

We’re fulltime, longest we sit is 3 weeks never near salt water. Mechanic looked at it and found a burned wire at one of the connections. He is calling in another mechanic who works on chassis and said theyd replace the starter. My husband has vertigo and the house spins when he looks up so he hasn’t been able to even look at it himself but all the suggestions here sound viable. We’re going to suggest this to the mechanic. After 20 years things start to happen. These past two years it’s been rockin’ the checkbook. Not much else can happen except the fridge is still kicking. Fingers crossed...