My 2007, Honda Accord, 6-speed manual, 6 cylinder EX Coupe vibrates when I accelerate between the speeds of approx. 50-65 mph and then smooths out above that speed. Slightly higher when going uphill.
It only happens when accelerating and not if I’m just cruising without applying the power. My wheels and tires have been checked for balance and are in good shape. No bent rims, tires are in balance.
Any clues here?