Question about 1999 Ford Super Duty F 450
Get the fuel pressure checked.Its low.When the engine is cool, the pump lines are contracted, due to cold and fuel flows properly.But when engine gets hot, the lines gets expended a bit.And this does not holds the fuel pressure.The pressure becomes low.The fuel flow becomes less,A required amount of fuel does not reach the engine and it starts loosing power.
First get the fuel pressure checked at any local car garage.If its low, then replace the fuel pump and fuel filter.The other thing to be checked is cam sensor and crank sensor,
A common problem with the (the engine in the Ford diesel trucks) is that the CPS or crank position sensor goes out due to vibration. If the computer isn't getting a signal from the CPS, it won't allow any fuel to flow from the injection pump. Worth a look, the sensor runs about $50.----------
also clean the IAc valve and throttle body with card cleaner.The IAc located on the throttle body.-------------
This should help.Thanks.Helpmech.
Posted on Mar 23, 2011
You didn't say if it was overheating or not but if it is, it sounds like a safety feature keeping you from damaging your engine. Check your fluids and check and see if it is putting out codes, you can go to auto zone and they will do this for free.
Is your check engine light coming on?
Posted on Mar 23, 2011
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Posted on Jan 02, 2017
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