Uh oh another engine bay rattle....

[YAR1S]

07' yaris HB
91k miles
Auto.


Few weeks prior noted low rattle noise while in all gears.
A week ago, went on road trip before coming home noticed coolant was slightly below low level. (I dont know if this is coincidence or I just havnt looked at the coolant in a while). Bought new pink coolant and carried on my way.... 9 hour trip through mountains(not the easiest trip) later.... my 'rattle' has gotten much louder and worse. My engine has the normal ticking noise but this rattle is on top of it and appears in all gears (P-N-D-R). Not loud upon startup but when engine is warm it is loud. It seems to be coming from the left side of engine or possibly from within the engine... too loud to tell. The belts look fine and nothing appears to be wobbly in the pully system. Coolant level is right where it was before I came home from the trip.


Any thoughts?




Im bummed because I just treated my yaris to a nice set of tanabe coilovers and now it goes haywire on me.