1997 Ford Aerostar Malfunction - Engine

Question: I have a 1997 aerostar 4.0 I notice when driving at low speeds the egine will surge like your giving gas and letting up but this will go away as you pick up speed. Also when you slow down from highway speeds and then resume or lets say accelarate it will miss out a couple of times then as you get up to speed this goes away. Took to ford they said fuel pump was bad put in new one 425.00 Still the same thing Other then this runs real good any ideas.

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Technican: Hello, Why did you not go back to Ford and demand that they fix your vehicle? I'd be so hot one could see me glow. I don't get loud but I don't back down. I know it must have stung to pay that bill. They should stand behind their work. If their diagnosis did not fix it then you should not have to stand the cost of their guessing. I recommend you tell the Owner/Dealer what happened and ask for an appointment with the Ford Service Representative for your zone. You deserve what is fair and no less. That said, take a look at the air intake hose/tube to the throttle body. Look for loose clamps, splits in the tube, etc. If air can get in any way other than through the air filter then the computer does not "know" the true mass air flow volumn and call for the correct amount of fuel. The throttle body may need cleaning. You may have a vacuum hose connection loose, split or disconnected. Thoughts?,

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