TL*THE CONTACT OWNS A 2003 NISSAN SENTRA. THE CONTACT WAS INVOLVED IN TWO CRASHES. THE ENGINE AND CATALYTIC CONVERTER WERE REPLACED TWICE. THE ENGINE STALLS AND LOSES POWER INTERMITTENTLY. WHEN DRIVING UPHILL AT VARIOUS SPEEDS, THE VEHICLE JERKS. WHEN TRAVELING DOWNHILL, THE VEHICLE SHUTS OFF. WHEN THE VEHICLE IS ON LEVEL GROUND, IT WILL AUTOMATICALLY RESTART. THE FIRST CRASH OCCURRED IN JULY OF 2007, BUT THE FAILURES OCCURRED PRIOR TO THE CRASH. WHILE IDLING AT A STOP LIGHT, THE VEHICLE SHUT OFF. IT TOOK A WHILE FOR THE CONTACT TO RESTART THE VEHICLE. WHEN IT STARTED, THE VEHICLE LURCHED AND JUMPED, WHICH CAUSED HIM TO REAR END ANOTHER VEHICLE AT 7 MPH. BOTH VEHICLES SUSTAINED MINIMAL DAMAGE. A POLICE REPORT WAS FILED. THE VEHICLE WAS TAKEN TO THE DEALER FOUR TIMES BEFORE THEY MADE THE FIRST REPAIR, WHICH WAS THE REPLACEMENT OF THE CYLINDER HEADS. THE FAILURE CONTINUED, SO HE TOOK IT BACK TO THE DEALER SIX MORE TIMES. FOUR OF THOSE TIMES THE VEHICLE HAD TO STAY AT THE DEALER, BUT THEY WERE UNABLE TO IDENTIFY THE CAUSE OF THE FAILURE. OVER THE NEXT 18 MONTHS, THE FAILURE CONTINUED TO PERSIST, SO HE DECIDED TO CHECK THE INTERNET FOR RECALLS AND LOCATED SEVERAL RELATED TO THE 2.5L ENGINE. THE DEALER REPLACED THE CYLINDER HEADS UNDER RECALL NHTSA CAMPAIGN ID NUMBERS 03V477000 (ELECTRICAL SYSTEM:IGNITION:MODULE) AND 06V242000 (ENGINE AND ENGINE COOLING). THE CONTACT WAS NOT INFORMED OF THESE RECALLS THE MANY TIMES HE VISITED THE DEALER. HE HAD TO CALL NISSAN TE