AM Radio Engine Noise
What do I do to get rid of the engine noise in my AM radio? Yeah I know who listens to AM anyway????
Thats what our Maint Forman said when I asked him about it. Sorry, but I am a sports talk junky and we even have 2 all sports talk stations here in KC.
My old car (Mack) was just fine but the new Mack picks up engine noise and drives me nuts.
First off all, i never post here on fri or sat nights, its just that i'm ill and i had to finish my taxes so don't be getting any ideas------you hear?
It's wild that an am would copy a diesel engine because there's no ignition. What would cause this? And yes, i too have had this happen many times with a diesel engine.
Stop at the local Radio Shack and talk to them about it. They sell an inline capacitor that emilinates or reduces 'engine noise'.
BTW, if I remember correctly from way back in my younger days, the radio noise is caused by the alternator.
Most noise in a diesel engine is from the injectors. Hoss has it right.
I have found that some brands of tires with steel belting can cause a electricel noise in the radio. It changes with different road surfaces, concrete, asphalt. so forth
Alternator is the first choice to look into.
Then I would check the grounding for the radio. and the mounting of the antenna.
More time consuming than costly.
well I took an old CB antenna and a adapter cable for am/fm radio and hooked it up
got great recption and no motor noise
pilot sells the cable for about $6
I used to install car audio equipment years ago when I was in High School.
The most common causes of radio noise on AM are:
*Loose antenna or improperly grounded antenna.
*AM trim screw in the radio not properly adjusted when it was installed.
*Defective alternator- noise in the radio is usually a sign that the alternator is going bad.
*In cars, an improperly wired inverter will cause noise in CB radios, and when using the radio on AM.
*Loose or defective battery cables.
*The radio itself may not be grounded properly (I advise running a ground wire from the radio harness directly to a metal part of the cab- find an existing screw in the cab that is not holding a plastic part, crimp an eyelet onto the ground wire, remove the screw, insert the eyelet into the screw, and re-install it).
The stock OEM radios today don't have much technology in the AM side, as AM is a dying breed. The 2000 Pete I drive has a junk radio that has a lot of interference and engine noise on AM. Once in a while I drive one of the new daycab Pete's, which have Alpine radios, and the AM is crystal clear.
Yeah what PTD said!
Most new car radios are JUNK!
First thing I do when I get a new car is throw the factory radio in the trash and install a good one!
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