AM radio static when ignition is switched on.

2003 HONDA PILOT
220,000 MILES • 2.3L • V6 • 4WD • AUTOMATIC
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BELLAROSAARTIST
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  • 1 POST
AM radio static
1. turn on ignition prior to starting.....buzz in am radio signal.

2. start engine......more buzz in am radio signal. result: cannot use am input.

3 fm ok.
Nov 9, 2015 at 10:59 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
A distinct buzzing noies which rises and falls with engine speed and is worse with AM reception is usually the result of either a bad radio ground or worn spark plug wires. Make sure the radio is properly grounded and check the antenna to make sure there is no corrosion causing a loss of ground. If all grounds seem good, question the engine's ignition system. Most likely the noise is from worn plug wires causing an electrostatic interference.
Nov 9, 2015 at 5:49 PM
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