need help with idle control valve

The problem I have at the momont is that when I have the car loaded up (A/C, headlights) it seems that the control valve doesnt seem to work it will idle close to 500 RPM. Is this a common problem? I mean the throttle is clean as can be so I was thinking of removing it and maybe freeing it up. Also to my $$$ worries is that I now have to replace my rear trailing arm bushes and my front rotors are warped… headache…