THERE ARE EXHAUST FUMES ENTERING THE CABIN. IT OCCURS WHEN THE VEHICLE IS STANDING WITH THE ENGINE IDLING. THE FUMES ARE DRAWN IN THRU THE HEATER/AC VENTS. I CAN SMELL THIS AT THE PASSENGER SIDE OF THE HOOD WERE IT MEETS THE COWL. I HAVE PUT A CO DETECTOR IN FRONT OF THE AC VENT AND GOTTEN READINGS OF 90 PPM WHILE THE VEHICLE IS STATIONARY WITH THE HEATER ON. THIS DROPS TO 0 PPM ONCE THE VEHICLE IS MOVING. I HAVE CHANGED THE FRONT EXHAUST MANIFOLD, IT HAD A CRACK IN IT AT ONE OF THE WELDS. THAT MADE IT BETTER BUT THE FUMES STILL OCCUR JUST NOT AS BAD. I HAVE PLACE THE PROBE FROM THE CO DETECTOR AT THE FRONT EXHAUST MANIFOLD AFTER IT WAS REPLACED AND DIDN'T GET ANY CO READINGS BUT WHEN I PLACED THE PROBE AROUND THE REAR EXHAUST MANIFOLD I GET READINGS OF 300 PPM AROUND THE CENTER EXHAUST PORT, WHICH LEADS ME TO BELIEVE THAT THE REAR EXHAUST MANIFOLD IS ALSO CRACKED. FROM READING FORUMS I BELIEVE THIS TO BE A WIDE SPREAD PROBLEM. I THINK FORD SHOULD RECALL THESE POLICE INTERCEPTORS AND EXPLORERS. THE REAR EXHAUST MANIFOLD IS MUCH MORE LABOR INTENSIVE THAN THE FRONT ONE THAT I HAVE REPLACED AND I BELIEVE FORD SHOULD BE PAYING FOR THESE REPAIRS
NHTSA ODI 11182181