Engine noise in radio on 2008 Chrysler Sebring

why do i hear engine noise through the speakers when the radio is off or on

Asked by for the 2008 Chrysler Sebring
There are multiple causes for the engine noise through the speakers. first is the Ignition Wires and / or Spark Plugs. Next is your radio antenna, radio ground. Next are the noise supression grounds. STRAP-ENGINE TO SHOCK, STRAP-EXHAUST TO BODY, STRAP-HOOD TO BODY, STRAP LOWER HINGE TO LATCH. STRAP-UPPER HINGE TO DECKLID All of these play apart in providing quality sound.