the RPM should idle 700 - 900
clean or replace your idle air control valve.
there is an Allen screw and a nut on the throttle cable you loosen the nut and the screw and adjust it to make it idle up or down.
The idle adjustment screw is located on the IACV behind the manifold on a 1998 Honda CR-V. Open the latch on the IACV then take an screwdriver and tighten the adjustment screw.
Just above the throttle cable linkage assy., on the intake manifold, there is a large flat screw for a regular screw driver bit. Turning this will adjust the idle.
The idle adjust screw is on the throttle body. The side of the throttle body that faces the front of the car should have a dime size flathead screw towards the upper edge.
It is nonadjustable. It is controlled by the computer.
On fuel injection models its more like a flow adjustment in the throttle body. It is usually a larger screw about 1/2 in. in diameter. Just around the throttle body. Not on the throttle moving system at all.
"Idle" can mean two things: idle speed, and idle mixture. Both of these are on the carburettor. Idle speed is adjusted via a screw that is on the throttle control cam. Turning this screw will change the RPMs of the machine at idle. The idle mixture changes the amount of gas that flows during idling, and can be changed by a screw inside a round recession on the bottom of the carb.
You dont adjust the Idle disconnect the battery for 10 mins and reconnect and the computer should relearn it idle .
fix the vacuum leak
If it is throtle body equipped, the idle control s solonoid controls it. If it has a carb there is an adjustment screw on the bottom of the carb.