Losing power in the morning
09-05-2008, 11:56 AM
#1
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Losing power in the morning
I have a 96 F150 5L V8 with 156k miles. I have been having an intermittent problem for several months now with the my truck. After starting up in the morning and warming up for a minute, I will get less than a mile and the engine will just lose power and go quiet even with the gas pedal to the floor. When I let off the pedal it returns to idle but must be pulled over and restarted. After waiting 10 seconds, i can drive it the rest of the day without a problem. In the past few months I have replaced...
IAC Valce
Air Filter
Fuel Filter
Spark plugs
Fuel pump solenoid
Mass air flow sensor
entire distributor assembly
EGR Valve
DPFE Sensor
It never happens when I leave it with a mechanic and sometimes I will go for weeks without it happening. Recently I have sometimes heard a whine from behind/underneath my seat when I know it will stall out. Any ideas?
IAC Valce
Air Filter
Fuel Filter
Spark plugs
Fuel pump solenoid
Mass air flow sensor
entire distributor assembly
EGR Valve
DPFE Sensor
It never happens when I leave it with a mechanic and sometimes I will go for weeks without it happening. Recently I have sometimes heard a whine from behind/underneath my seat when I know it will stall out. Any ideas?
09-05-2008, 06:41 PM
#2
Check the fuel pressure. Sounds like you are losing pressure. Does it happen with either tank? I run mine out of gas constantly and I have noticed a whine when the fuel pump is trying to pump but there is no fuel. Maybe you have a hole in a line inside or outside of the tank and the pump loses its prime.