I also took it to a transmission shop,( thinking thats where it was coming from) and they confirmed that the transfer case and tranny are working fine and has no issues.
i have an 02 4runner that is making a rattling noise coming from the lower front engine. timing belt and water pump replaced 500 mile ago and everyting looked and fit fine. No leaks, plenty of power, shifts fine and makes the most noise at idle. any ideas would be helpful....my first time on here.