Sounds like it might be a bearing problem.
No.... never a camera should never vibrate or make rattling sounds. If it is doing so then your camera is destroyed.
have the bearing housing checked they run abut $150 ea
The rattling you are asking about turned out on my 320 to be the catalytic converter breaking up internally.
If the noise sounds like a power steering whine it could be caused by the A/C compressor clutch bearing or the belt idler pulley.
Bad bearing in a belt driven accessory? i.e. alternator, water pump, idler pulley, belt tensioner, etc.?
That sounds like a pocket bearing in the transmission. In every other gear power flow runs through the countershaft so the input and output shafts run separately at separate speeds the bearing between them is called the pocket bearing. Only in 4th gear are they locked together and run as one shaft. The repair for this would be a transmission rebuild.
shock absorber or strut loose bolts
Depends on the noise. If it's a high screaching type of sounds the a/c belt is probably worn or dryed out so replace it. If it's a rattling sound it's probably a bearing that has gone bad.
sounds like the cv joints need replaced
The rattling and whistling on the 94 Explorer sounds like an exhaust problem. Check the exhaust for any leaks or loose connections.