Hi,

I´ve a problem />/>

s2000 AP1

- the car starts as idle@1000rpm (and remains stable) , I drive a few miles and running over 4.000 rpms the car "jerks"... if i drive a lot of time at this rpms, when i stop , the idle rpms change at 1.500rpm (and remains stable) ... and then I don´t have any more problems ...

- No CEL on


Any idea?

Sorry for my bad english.

Thanks

 

I would say just reset the idle. I'm guessing a dirt IAC valve.
https://www.s2ki.com/s2000/topic/492...ean-iac-valve/

 

Thanks for the answer, I will clean the IAC valve.

 

Also check the vacuum hoses. Can't hurt.