Re: 03 navigator p0442 and p0456 code
Took it to the Ford dealer, and they told me it was the gas cap. I replaced that.
A week later, the code came back, took it to them, they smoke test the car and found nothing. They added dye or something to the system to hopefullt find it, but did not find anything. They then said there is likely a problem where the gas tank is and they need to remove it to find the source of the problem. Problem is they are charging me too much and why do i have to pay if they did not get it right the first time? (dont answer that).
Does anyone know what could be the problem where the gas tank is?