My 2000 S 3.2 has been making weird noise on cold startup. This has been happening since I did the throttle body cleaning. It occurs only at cold starts and not when the engine is warmed up. It goes away in about half a minute. During this half minute car idle is pretty rough and then it smoothes out.
Below is the link to the audio file in m4a format. Windows media player or apple player would be able to play it.
The smoothing out in the audio file occurs around the 30th second.
https://docs.google.com/open?id=0BzNj15TtG1g_NjU0YTlmNzMtNmNkOC00MWM0LWJkO TEtNzIxNjhiZTE4NmMx