[Techoveride]

My 2007 Nitro SXT 3.7 idles at about 500 RPM's when it is warm which results in quite a bit of shaking in the car. I took it into the dealer and they said that is the normal RPM's and the shaking was not severe enough for them to do anything.
Just out of curiosity what RPM's does everyones NITRO idle at?

 

[BlueJet]

Blue idles at just under 600. Sometimes she idles rough, like at a red light but mostly she is smooth as silk! Wonder what's wrong with yours?

 

[Scar0]

500 here, Manual Trany. No shaking at all.

 

[dk1677]

yes 500 to 600 is normal

 

[SeattleJoe]

Just out of curiosity what RPM's does everyones NITRO idle at?

Hmmmmmmmm......... actually don't know what RPMs my 3.7L idles at. But it idles very smoothly. Have to check when I get back to the rig after work.

 

[Techoveride]

Does anyone know if there is a TSB to fix something like that? I am surprised the mechanic couldn't tell it was shaking badly while idling.

 

[moparman]

i have the same problem.... 480 to 600 depends on mood its in ... i also have 3.7 and have been to get fixed 3 times and can t get it right yet , sometimes it is smooth w/a/c on .. but turn off rpm drops and gets rough ,, dealer said 600-650 is what should be????

 

[PA Nitro]

Just a thought but have any of you with a rough idle checked your air filter? I would think that with an idle as low as we have on the 3.7 even a little restriction in air flow might cause it to gasp and grumble some.

 

[KenCary]

500 RPM on my 6speed Manual and it is about as smooth as I can expect from a V6. No V6 is as smooth as a V8 or in-line 6.

 

[MeanGirl]

well, I mentioned it to my girl to add to my list of to do's when i take it in in 2 weeks, she said it is probly time for the air filter to be replaced, it has not always done it, so maybe that is the cure

 

[Blue ram]

Mine runs smooth.
But the idle will vary up and down as soon as the heater fan is turned on.
even if the A/C is not.

 

[moparman]

i have replaced air filter on it . the last reprogram they just did ( last friday)seems to have made it worse. it used to idle rough sometime .... now its all the time w/a c off.... it does seem to have a bit better performance though, but i have seen it idle so smooth that you couldnt tell it was running , i honestly think its a mechanical issue not a programming or flash thingy ,

 

[Blue ram]

Actually you bring up the quiet.
I was unloading something last week and I fergot that it was running.
so quiet,

 

[moparman]

it has the capacity to be a very smooth running engine but............... somewhere something just dont remimber where to be at the right time(i.E roughness) maybe its a union part? HA HA HA no offense

 

[DogLHunt]

Sorry to hear about your problem. Mine also idles at 500 rpm, but is smooth.

 

[Bubbalicous]

does anyone know how to raise the idle?

 

[Scar0]

does anyone know how to raise the idle?

As 1bn stated, The dealer can use the starscan tool to set the idol for you.

 

[moparman]

idle

can it be raised on 3.7 and 4.0????? i was told it couldnt be raised by service guy at dealer that it was an imbedded peramiter in the program that was part of emission controll processing???? or was he just full of crap???? need mine raised to get rough idle smoothed

 

[KiNGnOj]

mine idles @ 500 and sometimes it will almost die out and other times it will rev by itself. i almost got into a couple of accidents at a red light cause of that. i dont know what is wrong either DODGE mechanic told me the same thing nothing is wrong. can anyone help me out

 

[TylerCanada]

The idle will go up slightly if there is a load (like the A/C compressor). Just because the A/C light isn't on, doesn't mean the compressor doesn't run. If you have any air going towards the windshield (and certain other criteria like outside temp are met), the A/C compressor will run occasionally.