ARK_SWAMP_RIDER
New member
I've began to notice an odd rattle/vibration sound on my 4runner. It's got a rhythm to it, kinda like a rock in a tire as your driving somewhat slow. I've been able to trace it down to the belts/fan behind the radiator. The odd thing is, it will not make the sound in park or neutral. With even a slight amount of gas, it doesn't make the sound. The only time it makes it is when in reverse/drive (or other gears) and at idle. Any ideas?
