ek3 d15 stuttering problem

[jerad]

yea tuners its manuel in low rpm in every gear between 2000 - 4000 rpm the car just starts to break up and have no power and gets bac in iam guessing when the 2nd stage of vtec kicks inn...i really dont know what to do any suggestions

[ruffnek]

engine check light working? is it on currently..

[jerad]

yea the light works and it doesnt come on when that happens

[embryo]

could be distributor or plugs

[jerad]

scn but changed the coil and put in a msd checked the plugs and they were good running the iridium plugs

[New Breed]

engine wash recently?

[neerajj]

Could be the idle air control valve, maybe needs cleaning, I had the same problem just with the automatic transmission and cleaning out the iacv solved it.

[jerad]

No I didn't engine wash in awhile...but neeraj I would try it that's the big. Sensor on the intake