Hi all,
Recently while driving my civic 2009 [1.8L eng, automatic gear] in highway speeds [around 80-100 km/h] at 3-4k RPM the engine was feeling kind of stuttering,
similar feeling to as if you drive too slow on high gear kind of chocking, and when i keep my leg on the throttle or try to raise the RPM,
my car start to slow and Check Engine lights starts to blink and it wont let me rev past 3k RPM.

when i turn the car off and start again the light goes off and i can drive normally again until the same thing happens again.
also when this scenario repeat itself and i lift my leg of the throttle it recovers and i can increase my RPM slowly.

the car went through:
Oil + oil and air filter replacement+ water refill.
Spark plugs replacement.

anyone have any ideas what can i do and check [or tell my mechanic, cause i'm pretty clueless lol]?

sorry if my English isn't that good

thank you so much!!