Three problems related to tank assembly have been reported for the 1998 Mercury Grand Marquis. The most recently reported issues are listed below.
The consumer has been experiencing problems with fuel tank assembly. Vehicle makes a clunking sound due to piece that is broken in the fuel tank. The manufacturer has been contacted.
Fuel gauge hung on full.
Fuel tank developed a crack, causing fuel to leak almost directly above the exhaust pipe . Dealer replaced fuel tank 3 times, defect is still occurring. Crack is always leaking in the same location.
| Tank Assembly problems | |
| Fuel Injection problems | |
| Fuel Pump problems | |
| Tank Filler Pipe And Cap problems | |
| Gasoline Fuel System problems |