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Old 07-25-2013, 01:56 PM   #1
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Engine noise coming out of sound system??

I recently put a kicker bass station in my jeep and all of the sudden when I turn on the radio all you here is like engine noise and you can also hear it in the sub. This has never happened with any of my other sound systems. What is causing it?? Help please!

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Old 07-25-2013, 02:02 PM   #2
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Check your RCA cables and your ground. I know when I installed a sub in one of my cars I experienced something similar, changed my RCA cables and it fixed it.

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Old 07-25-2013, 02:04 PM   #3
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Make sure you have good connections including grounds, move all speaker wires away from other nonspeaker wires, if they must be close they should not run parallel to them but cross at 90 deg. across them. They sell filters but I would check placement of the wires first.
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Old 07-25-2013, 03:05 PM   #4
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Engine noise is usually caused by a bad ground or a feed back loop from poor quality RCAs. Most of the time it happens on the regular speakers not on the subs because the frequency of the loop should be filtered out by the crossover in the amp. Make sure your freq settings are tuned properly as sending too high of a frequency to the sub will eventually damage them.
Also by chance is there an aftermarket radio or did you run the signal from the speaker wire? Sometimes durring an install if you power up the radio or amp before its been properly grounded and the RCAs are plugged in it can damage the radio (pioneers especially) there is no fix unless you have the manufacturer fix it.

I would try to isolate the noise like this
1. Check your ground to the amp, make sure its secure, the paint has been sanded to the metal where it contacts and its free of rust. If your ground lead is very long trim it down to as short as you feel comfortable. Then check your power wires, make sure they are not loose at the battery, the fuse or at the amp.
2. Check your RCAs if you have another set laying around great, if not you may need to buy or borrow some. Also did you run your RCAs with the power wire? If so a poorly shielded RCA will pick up noise, you'll need to relocate it away from other powered wires or just replace it.

3 if you still have noise try to equalize the grounds by running a wire from the radio ground wire to the amp ground wire, this will eliminate the feedback loop created by different ground locations having different resistances (old installers trick that works sometimes)
4. Check your spark plug wires, sometime bad plug wires can throw off some funky things with radios.
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Old 07-25-2013, 03:43 PM   #5
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Ok thanks for all the tips! Ill check everything again. I zip tied all the wires going from the sub to the head unit together to make it a little more clean looking, then I hid them under the carpet. I zip tided the remote wire to another wire I have going to my fog light switch because I mounted the dial next to that switch. However, the light wires are covered in that black coil stuff used when running wires through the fire wall near the engine. Could zip tying all the wires together have caused it? The ground is good. I just don't understand why it is messing up my radio. And yes I have an after market radio. I do not have RCA cables. This is one of those powered subs so where you would usually plug in the RCA cables, it only has one wire and that connected to the remote wire in the head unit. The same wire used to hook up the factory sub in the console.
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