91 DA integra rs revving while on idle

[DAish]

I got this car for free about 2 weeks ago and it revs itself constantly from just under 1000 rpms to just over 2400 rpms. The idle is broken but Im not sure it's just that. I disconnected the iac valve and the car still revved itself without the iac I'm just stumped any help?

[Black_B18C1]

Check the fit valve (fast idle thermo). Its under the throttle body. It has a plate on the back side facing the fire wall with 2 5mm bolts with a 8mm heads. Take them off. There is a plastic piece with a brass center. Take a short wide screw driver and turn the plastic piece clockwise till it stops. The brass piece will push down. Its spring loaded.

[Arrow12]

Could be a fit valve issue or maybe an issue with the vacuum leak in relation to the intake manifold. Here's a bit more on the situation with possible causes and fixes: http://wiki.answers.com/Q/How_do_I_f...s_while_idling