my dodge is a 2000 2500 360 5spd 4x4.power drops off and pops thru throttle body on 2000 Dodge Ram 2500

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driving down the road or shifting thru the gears it will act like its running out of gas, so i changed the fuel pump,it still does the same thing ,it will all so pop thru the throttle body wen u try an keep it going
(2) Answers
sounds like a clogged cat converter. If you can disconnect exhaust before the converter and test drive to see if it still acts up the same way. This will cause the check engine light to come on due to it being disconnected. Setting several codes.