i have a 97 dodge ram 1500 sport and it idles perfect but after driving a short distance it starts to spudder really bad ive replaced just about everything i could think of and ive asked a mechanic and he couldnt figure it out its acting like its not getting enough gas but i need some help thanks justin

 

What have you replaced?

Offhand, could be o2 sensor, or fuel pressure. Way too many variables here without knowing what you have and haven't done. Check engine light ever come on?

 

i dont have cats on it ive replced the crank sensor bc it was throwing that code but the truck hasnt had cats on it for atleast 5 years and it ran fine so i dont have o2 sensors anymore ive also replaced plugs wires cap and rotor i cleaned the throttle body thats about all i have done to it since the truck started running like **** im starting to think its the fuel pump but its not a constant thing only when i give it gas it starts to spudder it ran perfect until about a 2 months ago

 

ive got a 97 dodge ram 1500 sport with the 318 about 2 months ago it started running like **** ive replaced plugs wires cap rotor crank sensor and cleaned the throttle body its acting like its not getting enough fuel it idles fine but after driving a short distance it starts spuddering but then the rpms smooth out and its fine till i give it more gas any opinions
thanks justin

 

No oxygen sensors? Bad idea. The PCM should be throwing codes galore for that.

 

yah i dont think it has anything to do with them bc ive had the truck for 3 years and when i bought the truck it did have sensors or cats and it ran fine until about 2 months ago

 

check your fuel pressure at the rail while running..

 

Are you absolutely certain that it has no oxygen sensor(s)? You should have a CEL that won't stay gone and a truck that gets really crappy gas mileage if there's no upstream oxygen sensor installed.

 

probably a clogged cat

 

i dont have cats and well i do have o2 sensors that were in the cats i had welded spark plug nuts to them so i could put them back in the pipes but it didnt help so they have been unplugged ever since and hasnt affected anything but my gas mileage i get around 8 mpg in town and about 12mpg highway