I have a 2003 Ford Taurus that has suddenly started to lose power. It's not jerking or anything. But whenever you step on the gas it doesn't want to speed up past 45 MPH.
I do know it's not the transmission as I can tell it's shifting alright. It just acts like it doesn't want to get up and go.
I've changed the spark plugs, plug wires, fuel filter and still the same thing.