What is causing the rattle in the component just under the alternator? on 2005 Scion xB

Not too long ago a rattle developed in the engine. I purchased a mechanics stethoscope and I think I have isolated the rattle as coming from the component just under the alternator. I have purchased a Scion xb maintenance manual, but it does not come in until tomorrow. Thanks

by in Greenwood, IN on July 01, 2010
2 answers
ANSWER by on September 25, 2010
What did your maintenance manual book say about the rattling? Mine does this as well. Do the motor mounts need replacing?
ANSWER by on March 04, 2011
Probably your water pump.