THE ELECTRIC FUEL PUMP ON MY 2003 MERCURY GRAND MARQUIS FAILED WHILE MY WIFE WAS DRIVING DOWN A MAJOR THOROUGHFARE WITH HER DISABLED ELDERLY PARENTS. THE FUEL TANK WAS FULL OF GAS. THE VEHICLE HAD 39, 527 MILES ON IT. THE COST OF REPAIR WAS $525.27. APPARENTLY THE PUMPS HAVE TO BE EXPLOSION PROOF, BECAUSE THEY SIT IN THE GAS TANKS. FROM WHAT I HAVE HEARD, THERE IS A PLASTIC PART THAT SHEARS OFF. A MECHANIC AT MERCURY TOLD ME THAT IT IS IMPORTANT NOT TO LET THE FUEL LEVEL DROP BELOW ONE QUARTER OF A TANK. I HAVE HEARD THAT IF THE GAS GETS TOO LOW IN THE TANK, THE PUMP BEGINS TO CAVITATE, CAUSING A STRAIN ON THE DRIVE MECHANISM. THE PUMP SHOULD HAVE BEEN DESIGNED SO THAT IT DIDN'T CAVITATE, AND SHOULD HAVE BEEN MADE WITH BETTER PARTS.
THE ELECTRIC FUEL PUMP ON MY 2003 MERCURY GRAND MARQUIS FAILED WHILE MY WIFE WAS DRIVING DOWN A MAJOR THOROUGHFARE WITH HER DISABLED ELDERLY PARENTS. THE FUEL TANK WAS FULL OF GAS. THE VEHICLE HAD 39, 527 MILES ON IT. THE COST OF REPAIR WAS $525.27. APPARENTLY THE PUMPS HAVE TO BE EXPLOSION PROOF, BECAUSE THEY SIT IN THE GAS TANKS. FROM WHAT I HAVE HEARD, THERE IS A PLASTIC PART THAT SHEARS OFF. A MECHANIC AT MERCURY TOLD ME THAT IT IS IMPORTANT NOT TO LET THE FUEL LEVEL DROP BELOW ONE QUARTER OF A TANK. I HAVE HEARD THAT IF THE GAS GETS TOO LOW IN THE TANK, THE PUMP BEGINS TO CAVITATE, CAUSING A STRAIN ON THE DRIVE MECHANISM. THE PUMP SHOULD HAVE BEEN DESIGNED SO THAT IT DIDN'T CAVITATE, AND SHOULD HAVE BEEN MADE WITH BETTER PARTS.
- Kenneth W., Agoura Hills, CA, US