R3DS2K

you only have a misfire code? for which cylinder. i would stop throwing parts at your car till you know what it is. map and ecu wont cause a misfire code

amkaluta

yes cylinder 1 misfire. ive cleaned the IAC valve and throttle body still same thing idk what to do next?

R3DS2K

have you checked if you have spark at number 1?

GyozA

Check your coilpacks and plugs again.

amkaluta

changed my spark plugs and coil packs still same

GyozA

Reset the ecu? Prob. would have been easier to switch the coilpacks, plugs, and injectors around instead of buying new ones first.

amkaluta

how do you reset it? well i have a parts s2000 so i have lots of parts

GyozA

pull the 7.5 fuse on 3rd slot on right for 30 secs

wineboy

I had the same problem on my 07 with 36+K miles. I had a rough idle and the check engine light and VSA light would come on. I brought it to the local Honda dealer and got a misfire code on cylinder 3. They swapped coils and still got the misfire code on #3. The mechanic checked the valves and noticed that they were tight. He readjusted the valves and I haven't had any problems since. If all the other suggestions fail, you might want to check the valves as a last resort since it cost the most. Luckily for me, I got the extended warranty and it was covered. Why the VSA light came on is still a mystery. Good luck.

R3DS2K

vsa comes on when the cel comes on. if the car isnt running right, vsa might not work 100% therefore its disabled and the light comes on.

1st i would check to see if you have spark at 1 and than like wineboy said. check your valves. iwasnt gonna suggest this yet. if your engine is running rough, reseting the ecu isnt gonna do shit