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whistling sound when angine running
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bluetjk75
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Mar 5, 2010, 2:18 PM
Post #1 of 7
(2855 views)
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whistling sound when angine running
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I have a 2000 dodge dakota 3.9 2wd---I have installed a new amp,new wires,new cd player---everything works & sounds fine until I start engine--then I can hear a whistling sound & as I rev the engine the sound goes with the engine---I have made sure I scraped the frame where the ground is connected & all connections are tight.I also ran the audio wires(RED/BLACK) on the opposite side of the car away from the pos.& remote wires.Any suggestions would be greatly appreciated.Like I said the system sounds awesome until I start the engine.I guess this is considered engine noise?
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Double J
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/ Moderator
Mar 8, 2010, 1:00 PM
Post #2 of 7
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Re: whistling sound when angine running
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Sounds like you're getting Alternator whine noise....
They make alternator noise suppression filters....
Here is one site to check out...or just Google Alternator noise suppressors
Click here
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bluetjk75
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Mar 9, 2010, 7:10 AM
Post #3 of 7
(2826 views)
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Re: whistling sound when angine running
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hey man thanks,but now I have a different problem.My stereo was working until I drove my car.I noticed when I applied the brakes my sound went completely out in the entire truck.I still have power but no sound.Do you have clue what it could be,I have all wires color coded & connected correctly.I did notice the driver door speaker was not working after I installed new headunit,however it was working fine before.thanks for all your help on this
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Sidom
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/ Moderator
Mar 9, 2010, 9:39 PM
Post #4 of 7
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Re: whistling sound when angine running
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I'm just guessing here cuz you didn't say one way or the other but it sounds like you may have cut the factory connector off & wired it direct, hopefully that's not the case. Most decks you can buy a harness kit that will plug directly into the factory plug and then into the deck.
If you are going to wire direct you need to have the factory & decks wiring diagrams. You can't go by color because the colors don't always match up..........
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bluetjk75
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Mar 10, 2010, 11:21 AM
Post #5 of 7
(2811 views)
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Re: whistling sound when angine running
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oh sorry man forgot to mention that.........yes I did buy an adapter when I purchased the new radio,so no I didn't cut the harness from truck..someone had mention not having a good ground on amp,but i've got a pretty good one.
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Sidom
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Mar 10, 2010, 8:57 PM
Post #6 of 7
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Re: whistling sound when angine running
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That's good about the harness...... I'm a little unclear about the sound. Does it come & go when brking or went out completely and doesn't work now?
Real quick if you're running a seperate amp you may try disconnecting the amp and see how the system works with out it. If all the problems disappear then you want to focus on the wiring & grounding of the amp. I know a lot of amps are good for picking up engine noise and there are inline filters you can install like Jim had mentioned.......
Been a while since I've messed with any aftermarket system, I know some of the old amps have servicable fuses which if you blew you would lose your sound....... I guess you reach old phart status when you like the factory stuff cuz it sounds great & gets as loud as you want it.............
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bluetjk75
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Mar 20, 2010, 8:20 AM
Post #7 of 7
(2622 views)
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Re: whistling sound when angine running
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yes the sound did go out completely when i applied the brake.However I have disconnected the amp completely & tried to reconnect wires again from head unit to the stock harness.Upon powring on the unit I would get a crackling sound then nothing,I can see the unit working but no sound.The door speakers are not the stock speakers,they are aftermarket kenwoods.They all worked fine until I tried to hook up all the new stuff & then I noticed the driver door speaker had no sound,now none of the speakers have sound...I'm an old fart to but am almost deaf so would love to hear some music before I can't for good....:)
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