Have u put it in Park and press and hold accelerator to see if it still cuts off. How long of a drive before it cuts off
SOURCE: 2003 ford expedition
P0300 Random/Multiple Cylinder Misfire Detected
See all 300-series codes here: http://www.ford-trucks.com/article/idx/7/241/article/Ford_OBDII_Diagnostic_Trouble_Codes__P0300P0399__Ignition_System_or_Misfire.html
SOURCE: 2003 FORD EXPEDITION PCV VALVE LOCATION
show me a picture. everyone else says it's on the passenger side. nothing white on driver side of my 03 expedition.
SOURCE: My 2003 Ford Expedition continues to sputter, miss
MAF SENSOR NEEDS CK AND OR REPLACE. 1ST SENSOR COMING OUT OF AIR FILTER
SOURCE: i have 2003 ford expedition,when
Sounds like you have a fuel pressure issue. These trucks are bad about bleeding all the fuel pressure off when the engine is shut of but will run fine when started. the only good way to check this is to install a fuel pressure gauge on the shrader valve on the fuel rail. Once you get it isntalled start the engine and let it run for a minute or so,shut the engine off and it should hold pressure,if it bleeds off quickly it means the check valve on the pump is leaking and it will need a fuel pump.
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