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Yes did search... 2001 ls8 started last week and is getting worse as the days go by. getting a very high pitched whistle/whine at idle only when the engine is up to full temp, usually only after a ride on the highway. The sound changes and goes away when I press the brakes but even when holding...

2001 LS 3.9L V8. So my car makes this horrible noise which I believe to possibly be the IAC (idle air control) valve. I have removed and cleaned it and the noise has stayed the same if not possibly worse. I have also read on here that it may be impending transmission failure. Tranny has 30k...

01 V8 Been searching for a while and this is the closest I have found to my problems.. http://www.lincolnvscadillac.com/forum/showthread.php?p=6590 Loud moaning sound that only happens at idle to 1000rpm when hot. Just like in the above post yet here is the crazy part, when I turn on the AC I...