Truck starts missing when it gets down to 500 rpm in gear and will continue to miss until i restart it then runs fine till i put it in gear again .

Asked by Mar 28, 2017 at 06:24 PM about the 2000 Ford F-150 Lariat 4WD Extended Cab SB

Question type: Maintenance & Repair

My truck will start fine . Then if i put it in gear if it drops to 500 rpm it will
them have a miss and at 1500 rpm it really dab . I can take it out of gear
and it will keep missing and if i rev it up the miss is worse at 1500 rpm but if
i cut if off wait a min and restart it it runs just fine till i put it in gear and it get
down to 500 rpm  again if i go ahead and drive it with the miss it has less
power than it should and feels like one cylinder is not firing but dose not
show misfire code the only code is fuel pressure sensor code . I have
replaced the ( MAS AIR, MAP , EGR SOLENOID  ,IDAL CONTROL VALVE  
, FUEL FILTER , REAR ABS SENSOR , THROTTLE POSITION SENSOR ,
AIR FILTER ,  

1 Answer

and i have also replace the plugs and coil packs and checked the injectors and my fuses relays and grounds and i do not have any vacuum leaks and also checked my fuel pressure

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