I have a 2004 Fiat Palio speedgear (automatic transmission). This has happened to me twice in the last 3 days. I'm getting the car from P to D.Even if I hit the gas hard, it moves very slowly.This situation lasts for 3-5 seconds and then there is "kütt" sound and the vehicle goes into its normal movement.It's like the gear is refilled later. My car is at 125k km. I bought it 7 months ago. Happened to me twice. Has anyone come across a problem like this? What is the reason?