anyone have any ideas what is causing my hanging idle. after i rev it it comes down to 2k for a few seconds, then drops to about 1300..... the drops right down to 900 and idles smooth even with my TFS stage 1. any ideas?
See Jrichker's idle surge sticky for the master list of things to consider and try (many of the symptoms and solutions apply to both issues, as well as the tech procedures for checking or cleaning components).
You guys with idle problems could save a lot of time chasing your tails if you would go through the Surging Idle Checklist. Over 50 different people contributed information to it. The first post has all the fixes, and steps through the how to find and fix you idle problems without spending a lot of time and money. I continue to update it as more people post fixes or ask questions. You can post questions to that sticky and have your name and idle problem recognized. The guys with original problems and fixes get their posts added to the main fix!