[Ipgoogle]

hello ,

i have i30 2008 1.6 vvt petrol .
form week till now i have problem in it , when i drive my car for along time and along way ( 50km and more ) then try to stop on light ( on D of course ) , the RPM go down (400) and up to normal , when RPM go down the engine start shakes like the car it will turn off , and some time its turn off while A/C ON .
This problem just happen with me when drive on long way but in the city i have no problem ( in morning on short way i have no problem )
SO, i clean the IAC valve , and throttle ad change fuel filter and check idle speed every thing is OK . but the problem still happen and its feeling more when A/C ON .

So what to do now , please help

[Phil №❶]

The AC imposes a rotational load of approx 5 bhp on the engine when operating. I would suggest that there is a sensor which has given up the ghost dependent on temperature of the engine.

[Ipgoogle]

The AC imposes a rotational load of approx 5 bhp on the engine when operating. I would suggest that there is a sensor which has given up the ghost dependent on temperature of the engine.

i make a computer scanner and there is no fault at all , and no error code everything is fine on computer !

what sensor name you mean that have effect on temperature of the engine ?

[Phil №❶]

I'm not sure. I've checked the manual but no mention. However the ECU Engine Control Unit may be where it is sensed. I will refer your problem to our world class Hy mechanic who may help. Please be patient for his response.

@cruiserfied

[Ipgoogle]

I'm not sure. I've checked the manual but no mention. However the ECU Engine Control Unit may be where it is sensed. I will refer your problem to our world class Hy mechanic who may help. Please be patient for his response.

@cruiserfied

OK , i will wait . and thank you for your time & help

[cruiserfied]

Heya mate,

Not a common concern at all.
From what you have mentioned it does sound like an idle control issue. You mentioned cleaning the IAC? Is your throttle cable or fly by wire? The 1.6l im familiar with is electronic throttle and the idle control is integrated in the throttlebody.

[Ipgoogle]

Heya mate,

Not a common concern at all.
From what you have mentioned it does sound like an idle control issue. You mentioned cleaning the IAC? Is your throttle cable or fly by wire? The 1.6l im familiar with is electronic throttle and the idle control is integrated in the throttlebody.

Hello sir ,
Yes i have electronic throttle , and its apart of throttle body the mechanic told me that he clean it and put it back.
So , what you think should i buy a new IAC or new throttle body with IAC ?

BTW this video show what happen to RPM when i stop ( when speed become 0 zero)




Thanks for helping   

[cruiserfied]

I don't know what you will need to fix it, can't say over the interweb.
I dont even know if you can buy the idle control seperate to the throttle body. But it does follow those characteristics.
Has your mechanic experienced it happening?

[Ipgoogle]

I don't know what you will need to fix it, can't say over the interweb.
I dont even know if you can buy the idle control seperate to the throttle body. But it does follow those characteristics.
Has your mechanic experienced it happening?

Hello again,

I visit a lot of mechanic and every one say different from other , thats why i ask here to know problem , anyway i think i can change just IAC with out all thrrotel body and if i cant i will change it all.
But i think its not cheap so i will ask first

Thanks

[cruiserfied]

Good luck