Loss of power

[BJ AUTO DEPOT]

Hey there,

have a 1993 ford explorer with loss of power, changed the fuel pump, maf, pcm, ign. Module, get no codes from computer, car just loses power. Can you give me any other ideas what it could be?
Thanks

 

[Dopler174]

I would drop the exhaust from the manifold, see if it still loses power. If so, it will either be the Y-pipe, or the catalytic converter(s).

 

[yellowcat]

Fuel pump was replaced, that means the filter was replaced? When does it lose power? Uphill, over 60 mph, when? And the plugs are?