its almost like a whistling sound like that other form except my girl doesnt have cai. well my gf has a 98 accord and i guess about 3 days ago she helped someone jump start thier car. ever since it has a whistling sound like a humming sound i guess. wether in idle or excellerateing. help plz trying to figure it out soo i can calm my girl down by telling her wut it is. cuz i have no clue