Try to locate the rattling noise. I would especially check the catalytic converters if the noise sounds like it is coming from underneath the vehicle. Usually throughout some time the honeycomb material inside them will break up from 'heat stress' and will rattle around there. In some cases it can get lodged int he pipe between the converter and the muffler blocking some of the path of the exhaust causing some major performance issues.
bad wheel bearing may cause it
When it starts leaking are making noise.
YES it is. GM had a problem with the fuel pumps making noise and still does.
loud rattling noise when idling.
Depends on where the noise is whats making the noise. Can you be more descriptive of where and what?
Without further information this question cannot be answered
Your furnace may be making a rattling noise due to loose components, a clogged air filter, or a problem with the blower motor. It is important to have a professional inspect and repair the furnace to prevent further damage.
if it's a turbo check the turbo
check the exhaust line one of the heat shield (metal plate between the pipe and the cab) migth be loose
Your dryer may be making a rattling noise due to loose or worn out parts, such as the drum support rollers, blower wheel, or belt. It is important to address this issue promptly to prevent further damage to the dryer.
My 1997 Honda CRV is making a rattling noise when driving in rough roads
Inspect the catalytic converter heat shield.