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Radio noise when on or off - 2000 BMW 7 Series

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Hook up an inline filter capacitor/resistor network.

Posted on Feb 02, 2010

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Posted on Jan 02, 2017

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My auxiliary makes a whining noise on the radio on my 08 Jeep Liberty.Any ideas?


auxiliary now that really begs, a real NOUN.
really all things attached to and engine could be called auxiliary.
P./S
AC
ALT
idler there.
I guess he means the ALternator
and all ALT's do that,it's a 3phase alternator,with diodes that rectify these pulsed to pulsating DC, (noise)
the battery sucks up most this noise.. fact.

if one diode in the Alt SHORTS,OR OPENS,then NOISE GOES BALLISTIC,
I'm a radio man ( MIL and others)
car radio
ham radio
cb radio.
as you rac the engine ,the noises , a whine increases in tone.
tell you its ALT.
if ALT is OK on a SCOPE
then we add high pass filter to the radio power lead.

there are 2 paths here
power (conducted path)
and antenna (radiated path)

Jan 29, 2017 | 2008 Jeep Liberty

1 Answer

Buzzing noise from left rear inside trunk also causing radio not to work radio starts working when buzzing stops


That noise is likely due to a defective radio output amplifier, pull the radio and send it in for repair.

Jul 14, 2016 | Mercedes-Benz C-Class Cars & Trucks

1 Answer

On AM radio, there is often a sound, like a hammer hitting a 55 gal. drum interrupting the program. Does not do it on portable radio carried in the car.


all stations AM?

is the engine running?

for get the portable, some have vastly better a/m radios than any car has. in fact many cars radios a/m OR of horrid quality.

i can tell you why but its boring. (AGC, read up on that)

did you try the radio in car, parked say across town.?

did you try all stations

are you like 1 block away from an AM radio station, overloading yours.

AM radios are basically noise making radios., that is why FM was invented to stop that noise, (i cant hear it so.........?????)

are you listening to far away stations, this is normal

in fact you might hear 2 stations on same channel (freq)

and they will beat against each other.

on case of is in S.Calif where your station is clobbered by high power mexican stations 50,000 watts. strong.

and worse a night, does it get better in the day?



here is my advice, many AM stations have a rebroadcast on FM.

go there and listen. (use SAT radio?)

AM radio is subject to vast sources of noise.

ignition noise., high voltage power transmission line noise.

machinery noises, (electric)

or even illegal transmitters in your hood.



many new cars the AM radio is junk, they use this very cheap

chip inside that does this very poorly, but allows them to say

it has AM. ( for $1 cost)

the FM side is 10x better, or more. move up to FM like we all did back in 1967. (i used to build and sell converters back then)





answering for , all other modes work perfect, but AM radio..

Oct 28, 2015 | 2015 Jeep Grand Cherokee

1 Answer

SPEAKERS MAKES BUZZING NOISE WHEN RADIO ON ARE SPEAKERS PROBLEM OR RADIO UNIT ?


If they only make this noise when the radio is on, but do not when another source is playing, it's likely the radio.

Mar 16, 2015 | 2008 Ford Mondeo 2.0

2 Answers

1989 nissan maxima radio noise. Once it heats up it makes a high pitch noise. Could this be a bad speaker or is radio bad?


Hi! The radio may not be bad but I do believe that the noise filter is faulty. You will need to replace the noise filter, it is the box connected to the radio going to the speakers. Once replaced, I believe you'll be good. Hope this helps and have a good one!

Jun 02, 2010 | 1989 Nissan Maxima

1 Answer

Installed car radio now makes winding noise as i drive


This is the ground to the radio. What you need to do is hard wire the ground from the radio to a solid ground under the dash. The closer to the radio you get the better. Otherwise you need to put a noise reducer on the ground side to reduce the engine noise through your radio.

Oct 30, 2009 | 1995 Eagle Talon

2 Answers

Whistling noise when accelerating


you most likely have an aftermarket radio installed
the noise you hear is engine noise, if yo turn your radio off it will go away
this can be fixed by either getting better wiring for your aftermarket radio or by installing a noise filter, you can purchase that at most big electronic stores

Jun 23, 2009 | 2002 Acura 3.2TL

1 Answer

Unable to hear AM radio Static, Whining noise,


The filter in the radio has gone bad or the antenna connection shield is not grounded properly. Electromagnetic interference is the problem. Difficult to run down. Try another radio to determine if it's simply the internal filter in the radio/audio head. If a different radio eliminates this noise, the problem is in the radio's filter. If the problem is still there, is't most likely in the antenna circuit.

Apr 11, 2009 | 2003 Hyundai Tiburon

1 Answer

Speaker noise in car at all times


I replaced the amplifier that was mounted under the passenger seat it had gotten wet after the convertible top failed during rain storm

Nov 27, 2008 | 2003 Mitsubishi Eclipse Spyder

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