Regaining exchange rate stability has been a major monetary policy goal of East Asian countries in the aftermath of the 1997/98 currency crisis. While most countries have abstained from re-establishing a formal US Dollar peg, they have typically managed the US Dollar exchange rate de facto. We show that most of these countries were able to regain their monetary credibility within a relatively short time period. The Argentine crisis in 2001 caused a minor setback in this process for some countries. We measure the credibility of monetary policy by separating the fundamental and excess volatility of the exchange rate on the basis of a chartist-fundamentalist model. The degree of excess volatility is interpreted as the ability of the central bank to manage the exchange rate via the coordination channel.