I bought a throtlle body from professional products but I dont know how to set the idle, right now the idle is to high, some people said that i have to disconnect the idle speed control to adjust it, please any ideas or any body know any webside
Back out the throttle stop until it's off the throttle linkage (not touching). Turn until it just touches, and then a 1/4 turn more. Then, disconnect the battery for a bit to clear the keep alive memory (overnight seems to work well). When you hook it back up, crank it and drive it for while -- this will allow the computer to 'learn' about the changes you've made and try to adapt to them. Be certain your throttle body and your iab solenoid are clean and functioning properly. Be certain your tps is reading around .90V with the engine warm, ignition on, engine off - measure between the green and black wires. If you're still having problems - pull the codes to see if the diagnostics tell you anything.
ill offer this link - when doing a TB, i might want to clean other ancillary items up (IAC, etc). this link covers that as well. each page has a write-up on a different aspect of dialing in the idle.