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Aluminium foil help reduce engine noise?

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  • Aluminium foil help reduce engine noise?

    Hi all,

    I recently found the source of my engine noise. It is coming from the power cables and PC PSU which is around 10 - 15cm away from the 3 RCA pairs going into my equaliser. My question is, would wrapping the RCA's in aluminium
    foil help reduce engine noise?

    Car PC v1 - 1999 - 2000
    DOS 6.22 - MPXF - 2x16 LCD - 6.4GB
    Car PC v2 - 2002 - 2006
    XP - 7" wide/touch - GPS - Tank batt relay - 100GB
    Car PC v3 - 2008
    XP - 7" wide/touch - GPS - 802.11g - FM/XM - OBDII - WWW

    [||||||||||||||----] 80% complete

  • #2
    Maybe, but I doubt it. I would instead find an alternate route for the cables. It can't hurt the try the foil method, though.

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    • #3
      I don't know something makes me think that would help it pick up more noise. I would re-route the wiring or if that isn't try something like duct tape or something. Better yet if you don't have high quality cables and you can't re-route the wiring get some shielded cables.
      Georgia Area Meet Photos

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      • #4
        Let us know if the foil works if you try it. Thanks
        Georgia Area Meet Photos

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        • #5
          it it doesn't work at first, try gounding the foil somehow.

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          • #6
            if the foil helps(at least a little) , then a possible fix would be to buy shielded rca cables but it could be more work (cost more too) then just to run them somewhere where they are far away from the power cables

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            • #7
              Did you try grounding it like mhorton said? If you search, there are also many other ways to reduce noise.

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              • #8
                Hmm, physics course should help you on that one, your looking essentially for a faraday cage. I don't think foil's going to be your answer though. Shielded cables will probably be your best bet, otherwise we would all be running out and bying foil instead of exspensive cables.

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                • #9
                  I havnt tried this approach yet guys. I probably wont bother either as my RCA's are already shielded and im 99% sure the noise I am picking up is through my dodgy Equaliser (one of those small half-DIN ones).

                  My power cables are running along the far left of my car and the RCAs/speaker cables are running along the far right. That isnt an issue, however I found arouind 70% of engine noise was cut out when I cable tied (zip tie) the power cables behind the dash further away from the equaliser and grounded everything at a point which didnt pass the equaliser.

                  Car PC v1 - 1999 - 2000
                  DOS 6.22 - MPXF - 2x16 LCD - 6.4GB
                  Car PC v2 - 2002 - 2006
                  XP - 7" wide/touch - GPS - Tank batt relay - 100GB
                  Car PC v3 - 2008
                  XP - 7" wide/touch - GPS - 802.11g - FM/XM - OBDII - WWW

                  [||||||||||||||----] 80% complete

                  Comment


                  • #10
                    Inverter?

                    Hi,

                    If you're using an inverter to power the system and you're running it off the accessory line, can I recommend that you run dedicated power cables to it direct from the car battery. I have done this and I get no noise even without grounding the pc, inverter, psu or anything.

                    Just in case this is the situation,

                    Web

                    Comment


                    • #11
                      Originally posted by webnosis
                      Hi,

                      If you're using an inverter to power the system and you're running it off the accessory line, can I recommend that you run dedicated power cables to it direct from the car battery. I have done this and I get no noise even without grounding the pc, inverter, psu or anything.

                      Just in case this is the situation,

                      Web
                      I am running a PSU I built myself. It is drawing power directly from the battery and can be switched on and off via a relay.
                      What I am not happy about is that the PSU is about 15 - 20cm away from my Equaliser and I have fear it may be the cause of some of the engine noise, I will be hopefully relocating the PSU somewhere else in the car to see if that could be partly the cause of the problem.

                      Car PC v1 - 1999 - 2000
                      DOS 6.22 - MPXF - 2x16 LCD - 6.4GB
                      Car PC v2 - 2002 - 2006
                      XP - 7" wide/touch - GPS - Tank batt relay - 100GB
                      Car PC v3 - 2008
                      XP - 7" wide/touch - GPS - 802.11g - FM/XM - OBDII - WWW

                      [||||||||||||||----] 80% complete

                      Comment

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