Hello Steve,
It is not metal sound,but sounds like plastic scratch.
The noice sounds like the pronounced of ""clock", and it was NOT a constant sound for its short duration. It's a one-time-only and short noice pulse right on accelerator was pressed,then it disappeared.
This happened ONLY while accelerated slowly (not fast accelerated), but not always happened while accelerated slowly.
Two weeks ago, I had my car for brake service (replaced front brake pads,replaced brake fluid,Rotors and drums machined, tire rotation). This noice problem was never happened until I did brake service.
I'm not sure the brake service is related to the problem.
Thanks,
Eric
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