Hey everyone!
Does anyone have an idea what this is exactly? It fell out of my engine bay (99 4runner 3.4). I've checked my vacuum lines, trucks running rough. Any help will be greatly appreciated. Thanks.
This. Turn on your AC and find where the water is dripping from. Most likely will drip on your frame. Follow it up, most likely there is just a rubber grommet in there. That piece is supposed to be in there.