Yesterday I replaced the DC converter as a safety recall and when coming back home I realize my civic has a noise with the a/c on, then I open the hood and a cooling fan was working there's place for other but I realized there's only one fan... How many fans are normally on a hchII on the radiator? One or two? And how you can describe the noise on the a/c rattle, humming or what is normal? My other cars doesn't sound that much