MY 2003 FORD EXPEDTION STARTS UP YOU DRIVE FOR AWHILE AND IT DIES SOMETIMES IT STARTS RIGHT UP SOMETIMES IT TAKES THREE OR FOUR TIMES. FINALLY IT WOULDN'T START BOUGHT AND INSTALLED A NEW FUEL PUMP STILL...
If it does not have proper voltage,what is the voltage exactly?Also hook every thing to the vehicle,like it is supposed to be,and turn key to the on position and listen,or feel for the fuel pump relay to click on,and click off.Now look for the fuel service port on the fuel rail and remove cap.Depress the valve core to see if there is fuel in the line,it should spray out pretty good,so be careful of fire,and getting it in your eyes.You may have to cut key off and on with a 5 second pause between off and on,off and on.does it have fuel in rail?And does it have good pressure?It should have a good intense spray.If it does,the fuel pressure is fine most likely,good enough for it to start and run.Now if you are certain it is the fuel pump going off,or not getting enough voltage,then look at the oil sending unit.The oil sending unit will have control over the fuel pump in cases of oil pump failure.Check to see if the oil sending unit may be leaking.Sometimes they won`t leak if they go bad,but if it is leaking it needs to be replaced anyway,You will have to unplug it to actually see if it is leaking.Some vehicles have another switch just like the oil sending unit(most of the time it is the same part number as the oil sending unit)that are just for the sake of not letting the car start,much less,run,to save the engine from burning up and ruining the engine.Am I making any sense?Have you noticed any change in oil pressure?You might not see if you don`t have a gauge.But if this helps you figure the problem out,it will be a positive.If the fuel pressure is fine,then look for the crankshaft sensor to be bad,If I can help,let me know,,,let me know how you come email@example.com
Aug 19, 2009 |
2003 Ford Expedition