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Thread: Rpm drops to 400 car vibrates a bit then goes to normal 700 to 800k

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    PakWheeler Follow
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    Default Rpm drops to 400 car vibrates a bit then goes to normal 700 to 800k

    Salam my dear brothers,
    I have corolla xli that I purchased almost in mid 2012. I don't drive much the car has only made 9300 km so far.
    recently I started noticing a strange behaviour that I never observed before.

    Previosuly when I would start the car and leave it idle it would normally be at 700 rpm. So that's kind of a normal rpm that the car settled at.

    Now here is the situation

    Car is neutral and ac off or if car is in gear and clutch pressed )

    Given the above state of car I can notice that when I accelerate and then release it, the rpm goes high as expected and on release it drops way too low almost 300 to 400 the car vibrates a bit and then after a second or two it restores back to 700 rpm.


    Do you think what could be the problem ?

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    Kamando's Avatar
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    air pipes seem ok no air leak apparent ...


    my suspicion goes to iacv ....

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