Ralenti Neon 2005 SXT problem

How, I tell you about my martyrdom for some good months, I have read in many posts and apparently nobody has solved idle problems in the neon or if they have solved it, they have not said as. My vehicle is a neon Sxt (automatic) 2005 with 55,000 km.

In summary, this is the situation of my problem:

the car behaves very well while walking, when stopping the vehicle (either at a stop or when parking) the revolutions fall to 600 rpm and start vibrating, so that I stop doing so I have to make the revolutions rise approximately 750 or 800, for this I have to give a small accelerated or change to n They maintain between 750 and 800 rpm and therefore does not vibrate with the climate on when high.

Change of spark plugs and cables (mopar), air filter, injector washing, oil change and oil filter and time chain adjustment were performed.
The 3 motor and transmission supports were changed.

The computer does not send a fault code is nine agency.

Change the IAC valve for an agency new.

I hope someone who had the same problem or who knows how to solve it shares with the answer to this problem that I am looking for him, I don't find him. Greetings...

Your resenti is always like that, cold and hot?, could you try to let a little more air through the rpm on low, it can also happen that the acceleration body is dirty in that case only you have to linked it, and provise regulating the IAC in a test bench if it is of the Bocsh or Magnetti Marelli type, if none of this works, you can promote it to accelerate it a bit from the screw that regulates the screw Accelerator if you have it, isolate us as you are doing.

The idle tends to go down after using the vehicle around 10 minutes, when it is cold, it reaches 1000 rpm and when it does not vibrate and does not fall so much, only after using the vehicle for a small time. The IAC valve is new since they had revolutionized me to stop vibrating but a week the light of the check Engine was set by marking the IAC valve problem (I suppose that for having regulated it) then in the agency I bought the valve and there they changed it.
I will deal with cleaning the acceleration body and checking the TPS as well as the coil. I will comment how it was in the results. Greetings...

That I come with good news, it was practically resolved by 90% to put it so (since sometimes it feels like you want to go to 600 but it does not keep it up so I hope it improves with the cleaning of the acceleration body since I have not yet done it), since it feels but very slight. What was done was to adjust the throttle chin, because they told me that something was loose and additionally the computer software was updated. These two things were done at the agency and left at $ 672.80 already with VAT (in case they are interested). Why I decided to update the PCM since in this same post I was recommended to clean the acceleration body and planned to do it on my own, so in my search for how to do it, I found this post:

www.neonracingteam.com/Foro/Neon-2da-gen...pm-en-ocaciones.html


of someone with the same problem and with other details of how it could temporarily remove the low grace. I hope I can help others that we have the same problem. Greetings....

I and solved to reset the car of the car with the Scaner but they have to do that I do not assume air since you changed the IAC valve and another fact would be to check the masses of chassis and engine greetings