Golf estate diesel 2002.
When car is unladen no problems.
When I have heavy weights in the back of the car such as rubble to take to the tip, When stationary, the car at 1,000rpm sounds like its got a failed bearing such as an alternator bearing or a cam belt idler pulley bearing.
Rev up the car to 1,500rpm or above and the "worn bearing noise" disappears. Let the car idle at 1,000rpm and the noise comes back.
Unload car and then no problems at 1,000rpm.
How can a car's loading affect a stationary car with the engine at idle?