I have a 2005 stick shift Toyota Camry. Sometimes when I am at a red light or stop sign and the car is in neutral I feel a slight vibration from the pedals and a slight grinding noise coming from the engine. This only happens on occasion and only when the car is idle (at neutral).
What could be the cause for this of this vibration/noise? Is it the transmission or the engine? Where can I look to further investigate the issue?
I asked the mechanic to look at the transmission oil - he said it's fine. When I took off he told me "you don't know how to drive stick, that's why you're hearing noises". It seems that I may be giving too much gas when starting off. Could that be a cause for concern?