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Electrical 2nd Gen Dodge Ram Electrical Problems and Questions.


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  #1  
Old 05-16-2012, 05:45 PM
GT390 GT390 is offline
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Default electronic type buzz from tach / dash, in harmony with engine revs

I have googled this and there is a lot of info out there, but a lot of different issues, some have mechanical / vibration sources.

My buzz is always present, at idle and right through the rev range, it does however change pitch with engine RPM, just like an unsupressed ignition noise buzzing through radio speakers.

i.e., it sounds like a pretend toy or cartoon type engine noise revving up inside the dash when engine revs increase.

It is always constant, always there in all gears or stationary in park, its driving me totally crazy

Anyone came accross this before ?
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Old 05-18-2012, 03:15 PM
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Sounds like motor that drives tac is looseing windings or has a bad gear.
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Old 05-18-2012, 03:21 PM
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I would almost bet that 1 or more diodes in your alternator are causing it

I have the same thing going on, but it is only when using my CB radio,
with my issue, i can install a suppressor or isolator

But it is the diodes that are causing it
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