I'm asking again about a movie

[Telecolor 3007]

Well, I've seen some 20-21 years ago a movie traduced in Romanian as "Război casnic" ... something like "Househould war". But transaltion of the movie name isn't allway the exact one, so searching according to the nanme didn't gave me any good result.
I can remember 2 scenes:
1) The boy that liked the girl had a white car, convertible, '30's style. When he camed at the girl's home the girl's younger brother (no older then 13) sayed that the car must be stolen;
2) The boy who liked the girl had an argument with his mother so he took the device wich waxed the floor and waxed the floor in order to his mother to slip on the floor;
3) Both the boy and the girl lived in classical U.S.A. house, wood walls, ground floor + one floor, with a porch.