Just got through doing mine to fix the idle surge problem. I wasn't real keen on trying to get those hoses off without damaging them, so I just cleaned it still hooked up. The screen was about 75% blocked with gunk. I used throttle body cleaner with an extension straw, and a toothbrush. Sprayed the screen, scrubbed, sprayed some more, scrubbed, until it was completely clean. Then I sprayed a bunch more into the screen and the other opening, let it sit a few minutes, then turned the valve as far sideways as it would go to dump it. I used compressed air to blow it out real good, and let it sit for about 20 minutes to dry while I cleaned the throttle body.
Bolted it back in, unplugged the ECU connector, cranked it, and set the idle at 750. Cut the engine and replaced the connector. Cranked it back up. It settled in back at 750 and idles solid as a rock now. Worked like a charm. Hope this helps some.