RPM going up and down

when i turn on my car KIA Sportage 2009 the RPM will be high (5) then after 2 mints it will go down, and also when i put the gear on D and drive the car and like when i stop on the traffic light while pressing break the car like want to go without pressing petrol like it want to jump while me pressing break, also when i put the car on N the RPM well start go up and down

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Hi, If you are in the USA go to an Auto Zone store and get them to check if the there any fault codes being displayed on the OBDII port. They use a scan tool to do the check. I believe that they do the check for free. (They want you to buy their parts) The codes, if any might tell you what the problem is.

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:S the problem im in Dubai i will take the car to workshop to check it, i was hoping to fix it my self :D thanks anyways

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darkmoon, There are many things that can effect the idle on your vehicle. Could be something as simple as a vacuum line disconnected, check to ensure all rubber vacuum lines are connected, not cracked/pinched. If not have your car scanned for diagnostic/trouble codes. There are a few auto parts suppliers that do this service for free, Autozone, Napa, Pep boys, Aamco, Advanced auto, there may be more or you could just pick yourself up a cheap scanner. Scanning the vehicle could save a lot of time and avoiding throwing unnecessary parts at the car. Good luck

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Yah i think i have to scan the car and its easier to see where is the problem thanks :D

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