Ten problems related to fuel pump have been reported for the 1998 Ford Mustang. The most recently reported issues are listed below.
Car is hard to start or long start cycle, fuel pump check valve leaking requiring fuel pump replacement.
Fuel pump broke down.
While fueling car. . . Gas poured out of car. . Caused by damaged "o" ring around fueling nozzle from neck to tank. . . Significant fuel spill. . . Dangerous amount of fuel lost and leaking. . . Have owned several vehicles. . . . Never have known this to happen. . . Hazard to area while fueling due to fuel spill. Went to dealership 3 times in order to receive the correct part for replacement. Potential fire hazard-if not explosion capability if ignited while fueling. Perhaps a design flaw in the ""o" ring. Purchased car in 1998,, wonders. . . Should this part have worn out in this manner?.
The first time the car just quite on the highway while driving in rush hour traffic while we were on vacation. The second time it lost power and was starting very hard (10 to 15 sec. To start). Both times it was loss of fuel pressure and needed a fuel pump assembly. The fuel pump its self was fine, but a small clear flexible hose that attaches from the fuel pump/basket assembly in the gas tank to the lid that bolts on the top of the gas tank rubs against various parts inside the gas tank and wears a hole in it. Since this estimated $2 item cannot be purchased separately I was forced to spend hundreds of dollars on the whole assembly. The mechanics at the dealership explained to me that 90% of the "fuel pump failures" have had nothing to really due with the fuel pump. It was either the hose inside the gas tank rubbing through or the wires inside rubbing through. Why is there no recall for this? I would ask for a push for the hoses but if the wiring in the gas tank is wearing through also it needs to be changed before someone gets killed if they have not yet!.
Vehicle would hesitate, cut off or not start back up. Dealer had to replace fuel pump because no gas was getting to fuel injectors. Consumer has had the vehicle for 2 years, and was responsible for $607. 19.
Electric fuel pump failed twice.
While traveling at 70 mph the vehicle lost power, forcing an emergency exit from the highway. The vehicle was towed to the nearest Ford dearlership and we were advised that a technical service bulletin had been issued advising dealers that there was a problem with a wax ring in the fuel system that was breaking apart and the wax pieces were lodging in the fuel pump casing the car to lose power. No recalls had been issued because we were told the cars were all still under warranty.
Fuel pump failed.
Fuel pump failed causing engine to shut down in traffic.
Vehicle is difficult to start. Took it to dealer, and the dealer has replaced the fuel pump 5 times.