rpm suddenly droped down, problem?

[badtodd]

recently, my engine is running extremely low when stopped, about 200 rpm. Anyone knows what's wrong with it? :confused:

[mrwillz]

um on my ek1 myn only drops down to 100rpm wen aiir con is on and ive stopped n giv it a lil rev.

but normall 1000rpm
that sounds weird to idle at 200rpm

[JasonGilholme]

probably your idle control valve. theres plenty of posts about it. give it a clean and see how you go. have a search and see what you can find.

[taiman]

search it mang...

there are plenty of useful shit that ul find...


genrellly its ur idling position sensor thing...

[Nuttz]

possible leak in a vac hose

[EuroDude]

Bad Spark Plugs could be the cause. Or possibly a distributor problem.

Try shorting the ECU plug and look up the error code(s) if any.

[bennjamin]

if its a sudden drop in revs....IMO search either electrical or vaccuum connection is loose. Look aroudn your engine bay for any loose groundings ( off block , gearbox , thermostat , battery etc) or check all pipes around the inlet manifold are secure.
Good luck!

EDIT also try my ECU check for codes...

http://www.ozhonda.com/forum/showthread.php?t=9846

[Civic_Si]

For a quick fix method, adjust your throttlebody according...