Ford Idle Air Adjust Spacer Kit - When to Install for Throttle Body Sludge

This document is a single paragraph excerpt from a Ford service procedure describing when the Idle Air Adjust Spacer service kit should be installed. It explains that the kit is intended solely to correct sludge contamination of the throttle bore and plate. Before installing the spacer, the technician is instructed to verify that the idle speed concern is not caused by other systems, including the fuel system, IABP solenoid, throttle linkage, ignition system, PCV system, EGR system, cooling system, or vacuum leaks. If an Adjust Spacer is already installed on the engine, the procedure directs the technician to verify proper adjustments in Steps 3 and 10 only, and states that replacing the spacer kit is not required. Additionally, if the throttle body is identified as a sludge tolerant design—indicated by a yellow/black attention label—the entire procedure is unnecessary. This text appears to be an introductory or applicability note from a larger multi-step installation instruction set, part of an album containing related idle air control documents for Ford Bronco vehicles. No part numbers, years, or specific engine applications are stated in this excerpt.