2000 civic Jerking

[el nino]

Hey lads,first ever thread,go me! Have noticed the last week my civic is starting to jerk and hesitate especially under 2000rpm. If I was moving off from the lights for example,when I would hit 2nd it feels like its going to cut out,and this is the same for any gears.Pressing the accelerator does nothing,then after a few seconds it will bolt into life again.As you can imagine its such an annoying thing for any car to do so any help or suggestions would be greatly appreciated. I have recently bought the civic and its my first so just hope its not a serious problem.


About the car:
When I bought it it would idle up and down to 2000rpm. The guy I took it to said it was an idle valve controller and that a new one would need to be ordered from Japan. What he done instead was clean it and put it back. The story now is that when I turn the car on,it will idle up to 2000rpm then after a few minutes will return to normal,this in itself is a relief because initally it would jump up and down to 2000. I was wondering if the problem im experiencing now is a continuation of the idle valve sensor.

Any thoughts are greatly appreciated,thanks guys

 

[AlaskaB16]

Burp the coolant and be sure it's all the way full. Said you cleaned the IACV so you're good there (probably). Stock ECU/tune? You may be tuned for something else with out even knowing it. Do you know the history of your car? I would crack open the ECU and check that it's stock. The jerking issue can usually be attributed to fuel problems.

 

[el nino]

Ye id say its stock ECU.Im the 3rd owner on it,it has a full service history. When you say fuel problems do you mean there is too much fuel or not enough getting through?