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Engine noise on Cobra 75wxst in Jeep Wrangler

Discussion in 'CB and Export Equipment and Accessories' started by imustbenuts, Dec 11, 2010.

  1. imustbenuts

    imustbenuts Member

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    Hi all,
    I'm new here and to CBs. I installed my radio and can't seem to get rid of the engine noise. I've tried different ground location, noise filters, and nothing seems to help. Anyone have any ideas on how to fix this. I installed + to battery and - to body. The antenna is Firestik II and useing firestik cable with firering. My antenna mount shows .000 resistance and .006 at the other end of cable. Really getting frustrated with this.


     

  2. Beetle

    Beetle Sr. Member

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    Is the noise coming in via the antenna, or via the power leads? Search the forum for the problem - there are LOTS of posts addressing this with various vehicles.
     
  3. CM-4441

    CM-4441 Member

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    Beetle was right. Before you can fix the problem you have to figure out where it is coming from.

    Does the noise increase and decrease with engine RPM? What about the fan setting for heat/cooling? Another problem area can be the electric fuel pump. You might be picking up noise from the electrical system through the air and electric hookup at the same time too! Isn't this getting fun!:headbang

    Terry
     
  4. imustbenuts

    imustbenuts Member

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    Hi all,
    I'm new here and to CBs. I installed my radio and can't seem to get rid of the engine noise. I've tried different ground location, noise filters, and nothing seems to help. Anyone have any ideas on how to fix this. I installed + to battery and - to body. The antenna is Firestik II and useing firestik cable with firering. My antenna mount shows .000 resistance and .006 at the other end of cable. Really getting frustrated with this. :headbang:headbang:headbang
     
  5. imustbenuts

    imustbenuts Member

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    Sorry for the double post!!!!
     
  6. imustbenuts

    imustbenuts Member

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    Yes, it increases and decreases with the RPMs. I have no idea what or how to check where it is coming from. Most of my searching leads me to believe it is a ground loop. But it could be anything. The antenna is mounted on the rear passenger side. What is the best way to start the diagnosis?
     
  7. psycho

    psycho Running a special on our rooms!

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    Take the antenna off and see if the noise is still there. That will tell you whether the noise is in the power line or received by the antenna.
     
  8. GnG8d

    GnG8d Well-Known Member

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    Unhook it at the radio?
     
  9. CamoRedneck

    CamoRedneck KJ4PUF

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    Yes, if the noise stays your power leads are picking it up.
     
  10. GnG8d

    GnG8d Well-Known Member

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    I understand, I'm just not so sure that removing the antenna is necessary.
     
  11. mackmobile43

    mackmobile43 Jock Supporter

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    Makes as much sense as this does.
    YouTube - Farting On My Cousins Door
     

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