Well I think I figured out what that part is after numerous hours searching on the net. I decided to turn off my air suspension and low and behold the the noisy vibrations stopped. So now it's a matter of replacing the part and figuring out if I got any other suspension problems.
Newbie here. I have a 98 Expedition 5.4L it has a weird vibration noise coming from the front passenger side. When I looked under the hood it was coming from the part that is right behind the passenger headlight. It looks like a little silver box with a black canister coming off it. I can not...
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