You don't have a carburetor, so if you're doing a search or looking up parts, you have a throttle body.
The black motor doesn't come off. The silver block it's attached to must be unbolted and the two hoses must be removed. The most likely suspect of an idle speed that's too low is carbon blocking the air passage. If you get the normal "idle flare-up" to 1500 rpm at engine start-up, the valve is working.
As for the rough running at idle, a misfire will cause that but low idle speed will cause rough running too. The clue to a misfire is it will not clear up when you raise engine speed slightly. If the misfire is still there at 1,000 rpm, diagnose that, not low idle speed.
As for diagrams, nothing, in my mind, beats the manufacturer's paper service manual. You can find them on eBay. You can also buy subscriptions online to AllData and Mitchell on Demand, but you're just renting the information for your car model.
Sunday, January 26th, 2014 AT 10:49 AM