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Buzzing under dash

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Old May 4, 2010 | 03:08 AM
  #1  
D8chumley's Avatar
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Buzzing under dash

I have a recent buzzz under the dash around the control for the pedal adj. It stops if I touch the brake pedal and also if I turn on the L or R turn signal. I can't pinpoint it, anyone else ever had this problem? Truck is not affected that I can tell, still runs great. TIA- Tim
 
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Old May 4, 2010 | 04:34 AM
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Originally Posted by D8chumley
I have a recent buzzz under the dash around the control for the pedal adj. It stops if I touch the brake pedal and also if I turn on the L or R turn signal. I can't pinpoint it, anyone else ever had this problem? Truck is not affected that I can tell, still runs great. TIA- Tim

Check for a bad flasher relay - the 4 way or turn signal are both suspect.

Ford is real bad for interior corrosion because those parts in there are not marine grade.
 
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Old May 4, 2010 | 09:37 AM
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I had the same buzz in my previous 03 6.0. Have yet to hear it in my 06. You're not the first to mention it on the forums, so it must be relatively common. I'm hoping it pertains only to the 03/04 vehicles, since those are the only years for which I have read about this complaint.

The buzz sounds a bit like the board game "Operation", though not nearly that loud.
 
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Old May 4, 2010 | 12:02 PM
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Originally Posted by D8chumley
I have a recent buzzz under the dash around the control for the pedal adj. It stops if I touch the brake pedal and also if I turn on the L or R turn signal. I can't pinpoint it, anyone else ever had this problem? Truck is not affected that I can tell, still runs great. TIA- Tim
I would also lean towards the relay. The contacts are getting a little corroided.
 
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Old May 4, 2010 | 05:09 PM
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Thanks for the replies guys. I was figuring something like that as I did a quick search before I had to get on the road for work this AM and thats what I read but the symptoms weren't exactly the same. I guess thats something I can pick up at Advance Auto, I'll stop after work tomorrow. Hopefully it ain't all that expensive.
 
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Old May 4, 2010 | 08:30 PM
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Just fixed one.........combination switch........the only place where the turn signals are at the same place as the stoplights.
 
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Old May 5, 2010 | 04:20 PM
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Picked one up at Advance Auto for @ $16 today. No more buzz. Is the combination switch the same as the flasher? It has 5 prongs and is a bear to get to! You almost need to be a contortionist to get up in there. When I first plugged it in (key "on"), it was clicking, like the turn signals were on. Then when I started it, it stopped. Well, at least I couldn't hear it over the engine.
 
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