I GET EXHAUST FUMES / DIESEL SMELL THROUGH MY VENTS. I BROUGHT THE TRUCK IN AT 1500 MILES AND THEY REPLACED THE EXHAUST MANIFOLD. IT DIDN'T HELP. THEY SAID DRIVE IT, AND SEE IF IT GETS BETTER. I HAVE BROUGHT THE TRUCK IN 5 TIMES FOR THE SMELL, AND THEY CAN NOT FIX THE PROBLEM. FORD IS TELLING ME IT'S NORMAL. I HAVE FRIENDS WITH THE SAME VEHICLE AND THEY DO NOT GET THE FUMES COMING THROUGH THEIR VENTS. SOMETIMES THE FUMES ARE SO STRONG THAT MY EYES BURN. MY SON WILL SAY OPEN THE WINDOWS BECAUSE HIS EYES BURN FROM THE FUMES.*AK