Hello i just joined this forum hoping to obtain some insight. I have a 2000 Dodge ram 1500 5.9L 4x4 with about 111,000 miles. I bought it in January or 14.

Issue: I am not sure if it would be considered a miss fire but at idle it goes rough than smooths out, than goes rough again and than smooths out etc etc. Not horribly rough but still enough to feel.

replaced: I have already done the cap(mopar), rotor(mopar), ignition coil(mopar), wires(bosch), plugs,(NGK), IAC(mopar), Plenum kit(Hughes), K&N Air filter, Hughes Thermostat, PCV(mopar), belt & tensioner(mopar).

I saw people saying the TPS possibly but if i wiggle ithe connector while running nothing happens and normally if that is bad moving it will kill the engine or make it bog.

Any theories?

 

Does it do it immediately on startup, or only after it runs for a few minutes?

 

no it will do it right away. it will either start smooth and jump to rough or the other waqy around. No codes show up and i checked the vacuum lines and they are all good. Im stumped

 

Check the map sensor, if its going bad it can cause the problems your having.

 

Make sure you have wires routed properly

 

How dirty is the Throttle Body?

 

throttle body was just cleaned when i did the hughes plenum kit.

 

which wires?

 

Did u scan the comp? You may have an engine code even though your eng light isnt on--check the vacuum plugs/caps and lines very well disconnect ur tps and see if it makes a dif it is also possible you got a bad idle air control solenoid even though its new--Check the fuel pressure-shrader valve is easy to get to--what u are describing in my experience (no codes) has been a bad iac-Fuel issues usually set a lean code-and tps etc almost always set a code-

 

Spark plug wires.