Engine Interferance w/ Radio
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=5706
Printed Date: August 18, 2025 at 3:46 PM
Topic: Engine Interferance w/ Radio
Posted By: Joe1208
Subject: Engine Interferance w/ Radio
Date Posted: November 20, 2002 at 9:56 PM
I just took out the stock radio out of my saturn and installed a brand new sony cd player, my old radio would pick up some interferance from the engine, and when i replaced it, the noise was still there, im using the same ground connection from the stock radio, any ideas??? Is it even the ground cable.....If soo were is a good place to hook it up too?? Its only when i play the radio, the cd player is not effected, and when the engine is off i dont get any interferance... help please??
Replies:
Posted By: crroush
Date Posted: November 20, 2002 at 10:27 PM
if you have a distortion analyizer or access to one you can see what is happening at line level. You can always put a filter inline to remove any unwanted harmonics out of the system, but I have never seen a factory radio/replacement radio without amps give the "alternator wine". The other question I would ask, is it really engine noise, or could it be you have a bad speaker somewhere that just responds with distortion when operating at certain levels??? Maybe a bit more of a description of what you are hearing would help. Let me know Craig
Posted By: chasesaccessori
Date Posted: November 21, 2002 at 3:11 PM
Radio noise is a troublesome thing to get rid of sometimes. Only happens when you play the radio----It is in you antenna. check the ground on the antenna mount first!!!!! Then after you are sure that it is clean and has a killer connection, trace the antenna back to your deck making sure that it does not run next to any power wires and that the shield is not cut or chafed. If it persists, I would replace the antenna anyway because it might be inside the antenna itself. ------------- (owner/installer)
Chase's Accessories
Ridgecrest, CA
in business since 92
Posted By: Velocity Motors
Date Posted: November 22, 2002 at 12:58 AM
You may also have ignition induces noises. If the ground is good and the antenna is not a problem, check your power wires and run a new wire to the battery or add a relay to get a clean signal to the deck.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: chasesaccessori
Date Posted: November 22, 2002 at 10:29 AM
Joe said: "Its only when i play the radio, the cd player is not effected, and when the engine is off i dont get any interferance" Joe, if it were me, I would do what Jeff said last. No offence Jeff. If you find that the antenna is ok and you opt not to replace it, then my next step would be to run a different ground from the deck, as short as plssible and now where near any other power wires, to the firewall. ------------- (owner/installer)
Chase's Accessories
Ridgecrest, CA
in business since 92
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