i recently got a toyota corolla gli 95 automatic, engine, works fine while running, problem is when im on "D" and brakes pag traffic, the engine vibrates medyo "mayanig" kaya nilalagay ko na lang sa "N" para mawala, ive notice pag naka off ang aircon ko , di nagvivibrate engine ko. pls advise mga sir,nagpachange oil and atf nako and also the spark plugs, is this normal kasi new A/t user ako, or should i get this fix?