Inconsistent Rough idle, already replaced multiple items - DodgeForum.com


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Inconsistent Rough idle, already replaced multiple items

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Old 04-14-2014, 06:22 PM
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Default Inconsistent Rough idle, already replaced multiple items

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?
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Old 04-14-2014, 08:12 PM
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Does it do it immediately on startup, or only after it runs for a few minutes?
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Old 04-14-2014, 10:21 PM
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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
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Old 04-14-2014, 11:48 PM
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Check the map sensor, if its going bad it can cause the problems your having.
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Old 04-14-2014, 11:53 PM
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Make sure you have wires routed properly
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Old 04-14-2014, 11:55 PM
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How dirty is the Throttle Body?
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Old 04-14-2014, 11:58 PM
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throttle body was just cleaned when i did the hughes plenum kit.
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Old 04-14-2014, 11:59 PM
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which wires?
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Old 04-15-2014, 12:06 AM
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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-
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Old 04-15-2014, 12:43 AM
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Quote:
Originally Posted by jmhd1989 View Post
which wires?

Spark plug wires.
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