2004 Dodge Ram high rpm stutter

2004 DODGE RAM
120,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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STRMWTR1
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just started but truck runs normally as long as you don't push pedal all the way to floor...if you do it just bogs down and barely accelerates at that point. same thing happens if you hit around 3500 + RPM WHILE DRIVING other than that it starts great and runs fine even at high speeds. it has new throttle body unit and sensor. it also pops codes po171 and p0174 and lastly po113 any suggestions appreciated.
Feb 10, 2015 at 7:08 PM
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HOMER1967
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with those three combined codes,i would suspect a map (manifold absolute pressure sensor).sensor.
Feb 10, 2015 at 7:16 PM
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STRMWTR1
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that is what I thought but this vehicle doesn't have map sensor
Feb 10, 2015 at 7:20 PM
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HOMER1967
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it should be on the front of the intake,in the middle between the alternator and the a/c compressor.
Feb 11, 2015 at 5:17 PM
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STRMWTR1
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ok changed map sensor and throttle body no change in performance any ideas
Feb 17, 2015 at 3:58 PM
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HOMER1967
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hey buddy,i would suggest that you check your fuel pressure and see if it is in spec,you should also check fuel volume so you may want to take it to a shop for these tests.at this point it could be anything from fuel pump,intake gasket,02 sensor ,ect.but if I were you I would start with the fuel pressure/volume test.
Feb 17, 2015 at 4:25 PM
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STRMWTR1
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ok last question :) going to replace fuel pump module on 2004 dodge ram 1500 5.7 some are telling me I need the fuel pump regulator as well and others say it is built into the fuel module it is a 26 gal tank. any idea?

Thanks
Feb 24, 2015 at 4:14 PM
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HOMER1967
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did you do any testing? if so what were the results? and to answer your question,it's all one unit.the fuel pump module or assembly.
Feb 24, 2015 at 8:13 PM