I have 2004 f350 6.0 diesel after it warms up starts losing power and sometimes completely shuts off.Fuel pump on frame is also making loud whinning noise both problems started same time.Changed both fuel filters no change.Pump costs 300.00 dollars just want an op. if I heading in right direction.

Whens the last time you change your fuel filter. The other problem could be the fuel pump. Our you using Bio Diesel or regular Diesel ?
Some Bio Diesel will not burn hot enough to give you the power.

Ok 1 did you buy a brand new pump. 2 did it come with a replacement wiring harness. 3 if either 1 of those answers are no go buy a brand new pump with harness. If yes to both you got a bad pump.

Fuel pump relay is behind the radio to the left. This is inside the dash board towards the drivers side. The fuel pump inertia shut off switch is in the passenger side front kick panel. Check for power at both sources before checking at the pump itself. It might save having to drop the tank.

Most likely this is power steering pump noise. If it goes away then just leave it alone. Do make sure the fluid is up to level mark on the dipstick for the power steering fluid reservoir.

when i change engine oil in pajero 2800?
please give chart?

you may need to replace your steering fluid. dirty steering fluid can cause to make your steering wheel hard to turn.

either your fuel guage is not reading properly and you have less fuel than you think or your fuel pickup nedds to be adjusted sometimes the pickup looses the ability to pull the fuel from a certain level which would indicate that the pick up is going bad or is already bad if you replace just the pickup see if you can get one thats a little longer than the one that you have already so that it can go deeper into the tank. maybe the pickup tube has fallen off also and the pump can only pull the fuel when the tank is full. hope this gives you some ideas as to where to start.

possible power steering pump.

Try replaceing the injection module on the side of the injection pump.

Hi. I had the same problem on my 2004 Dodge Ram 3500 Cummins. I went to the dealer and they did a bunch of diagnostics and they replaced my fuel pump. At the same time they put in a retrofit kit that moved the fuel pump to the inside of the gas tank. I have not had the problem since. The cost was about $1,200, but my 100,000 mile drivetrain warranty covered it and I had to pay the $100 deductible.