99 f350 loses power under load

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99 f350 loses power under load

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Ford Forums >> Ford Trucks, Ford Vans & Ford SUV's >> Ford F-250 & Ford F-350 >> 99 f350 loses power under load

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99 f350 loses power under load - 8/20/2008 2:18:16 PM

GAMEOVERRACING

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Joined: 8/20/2008
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i have a 99 f350 that runs fine until i try and pull a load on it . i have put new fuel pump, map sens, regulator, and fuel filter. it is a 7.3l diesel motor . has anyone experienced anything like this. thanx

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RE: 99 f350 loses power under load - 8/20/2008 3:47:36 PM

Hayapower

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Joined: 7/22/2006
Status: online

The 7.3 has a fuel tank mounted module (sending unit ect) that has ''2'' cylinder shaped micro screens ''inside'' the plastic module body.. (it un-snaps apart) Not just the large external suction/inlet screen.. Over time they plug and restrict fuel volume/pressure and usually shows up as a hard acell/heavy load condition for flat throttle/stumble, misfire ect.. The micro screens are cleanable/reusable.. A fuel pressure/volume test will generally show if their restricted.. My bet is that they are...

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05 F250 C/C FX4 6.0
1969 Firebird Trans Am
2003 Hayabusa GSXR1300

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