so here is the problem...

everyday I drive my car in going to school, everyday I do encounter this problem that after starting and having the normal 3bar temperature on the cluster gauge my car runs smooth and fine but when hitting just 65kmh I can feel that my car looses power and I mean it because I can feel it literally. when the problem already occurred it will be significant till upon reaching my destination. after a couple of hours in school and letting my ap1 to have a little rest before hitting the road, upon starting the car it again runs nice and smooth and upon reaching 65kmh again I will experience the same problem like what I had mentioned. this really sucks because I cant enjoy my car after 65kmh, and imagine that... only 65kmh... not even 1/4 of the whole potential or what an s2000 can give...

A local s2000 is not available here in my country and all s2000's here are imported and most are converted from rhd-lhd to be street legal. So parts are very hard to find for my car.

I also don't know if I am pulling some codes because I do have 1 due to an air pump problem and I would really don't know if I am pulling a different code for my power loss problem.

so what do you think is the main source of my problem?
does anyone of you guys had already encountered such problem?
what should I check?

inputs will be very appreciated since s2000 owners here will not reach a number of 30 I guess so inputs, opinions, and suggestions from a forum like this will be a great help for me.

 

spark plugs?, try to change them out and have you over reved
lately?

 

already dine changing them along with my oil change. valve clearance also serviced.
was thinking of my clutch maybe it is slipping?

this problem could really be felt till 3k rpm and at around 3.6k rpm I can feel a little power gain but not like when I do drive it without the said problem.

 

forgot to answer your question, No... I have'nt

 

any inputs? it will be very appreciated

 

if your air pump is throwing a code buddie get that checked out because i think it will put the computer in limp mode. (limp mode means car is not performing to its max potential) that air pump is an annoying unit in the fact that it is very sensitive.

pull the codes from the car using a code reader and report back. im willing to try and help you out man, just need more info

 

Air pump code does not affect the cars performance In any way. Scan it first, look for another code.

If you can't tell the difference between an engine that lacks power or a slipping clutch it will be very hard for anyone here to help you including myself.

 

Spark plugs is a complete guess. That is not your problem.

 

65 km/h in 6th is.. 2200 rpm?
Does this mean you can not go over 2200 rpm in any gear?
Or does the engine rev up to redline in 1st for example?
And how? Smooth?


It's not that you're driving in 1st all the time.. are you?
There are 7 gears in your gearbox, 6 forwards and 1 reverse.
J/K

 

yup my air pump do throw a code. like what billman said it is not a factor for my car to switch into limp mode.

thank you very much sir for your help.