ivory90

hello,
I have a problem with my s2000, my engine runs totally restless as soon as gas is going to speed up and is now available and comes from what it could be? I've already checked all the sensors are all ok so far in my opinion. the engine ran worse and worse day by day. I've just cleaned for rotary control but it has not helped. I've posted below a video link from my s2000 as he runs.
I thank you for your help.


http://www.youtube.com/watch?v=l0P1cf4q41s

chino239

My s2 is doing the same as your .... I cleaned the idle speed control valve stiill the same so my next step is buying a new one

xviper

Almost all S2000s will do that to some extent when you just sit there stationary and rev it after it's been up to operating temps. That is not necessarily an indication that something is wrong. However, yours is a bit worst than most. Beyond cleaning the IAC mechanism, check your spark plugs and replace as necessary, clean your injectors as necessary, replace air filter as necessary, do the "MAP Whack" and zip tie thing if it's not done already and clean out the passageway under the MAP sensor. Finally, don't sit there and rev it like that. It only creates a situation that makes you think something is wrong.

ivory90

I have now changed my spark plugs and he runs back to normal BUT when I then mapped to the upper hose for picture with red circle bordered on it stuck again he begins to run roughly vlt you can tell me what is the picture below on the second mapped? Because someone has for me a manual with pictures like the hoses are connected by aem v2? Ivo

xviper

That is part of the secondary air injection system. It's part of the emissions control system of the car. The thing in the second picture is a sort of vacuum tank, also part of the same system. There should be a hose going from the thing in the first picture to the thing in the second picture. There should also be a white one-way check valve somewhere on one of those hoses. The exact routing and direction of the hose run can be found in a thread in this forum.
The new spark plugs may have helped the situation but do your test again when the intake temps are high. The same thing should repeat itself.