Hi
i have a problem in my b18c1 vtec engine
yesterday it looks running fine until today i have an issue of idling problem
and not only idling even in running the car looks like choking or dying running around 1000-2000 (normal driving) its looks like there are no gas but after some few second it will come back to normal.

the issue is its looks idling fine if you start it then wait some few seconds or a minute i can feel the idle or engine is dying the rpm is from 1000 and it will go slowly down around 500 to 400 and it will be back to 1000 after a few seconds..

but when i am speeding around 50-100kph or high rpm (flooring) i didnt feel any problem there are no choking at all, it only appear when i go to neutral or city driving mode ,in neutral the rpm stays at 1000 and few seconds it will go slowly down and it feels like choking and it looks like dying

what can be a problem for this?


Thanks in advanced sorry for my english i live in asia

 

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