I have Civic 2002 Prosmetic in very good condition. When I drive the car in lower speed and accelerate it with low foot to increase the speed, then car reduces the speed and then rise up (as mechanic said Gari Baith k Uthna). Mostly it happens in traffic or at U tern when i accelerate slowly slowly. The duration of this condition is almost 1 second. For more understanding if I draw the graph it will look like this ----|_|------
If i use hard foot acceleration at any stage (from 0 to any speed) that condition never happen.
I want to know what and where problem can be? Because i want to keep my car in perfect condition like new. Engine is perfect and giving good mileage.