1994 Ford F-150 Repair Question
Topics covered: Fuel pressure, Fuel pump, Fuel pump relay.
Mileage: 114,000 miles.
Mileage: 114,000 miles.
Asked on July 2, 2012
F150 starts then dies
The truck will start up fine runn for a couple of seconds then die. Replaced mass air flow sensor and it did not fix. if you unplug the maf the truck will run with no issue. put 2 different mafs in it and the problem was not fixed. it is also a 5.0L
Asked by thunderracing07Answer
Replied on July 2, 2012
Have checked for codes? fuel pressure?
Replied on July 2, 2012
i have codes 111 system check ok and 556 for fuel pump relay power. have not checked fuel pressure. it runs fine if the maf is unplugged. you plug the mass air flow in and it immediatly dies.
Replied on July 3, 2012
With MAF pluged in air fuel ratio is regulated if fuel pressure low will cause stalling. mAF unpluged runs full rich