Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.

10.0

really awful
Typical Repair Cost:
No data
Average Mileage:
39,527 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. re-engineer fuel pump (1 reports)
2003 Mercury Grand Marquis fuel system problems

fuel system problem

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2003 Mercury Grand Marquis Owner Comments

problem #1

Dec 202005

Grand Marquis LSE 4.6L

  • Automatic transmission
  • 39,527 miles

A D V E R T I S E M E N T S

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.

- , Agoura Hills, CA, USA

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