New plug wires now have speaker static - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 10-27-2012
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New plug wires now have speaker static

so i had a split in one of the plug wires so i ordered a set of motorcraft plug wires on ebay part number WR-5791 and now after i installed them i have a hum that comes through the speakers even with the stereo off. seems to be loudest at the end of each gear and around 70 mph.. the old wires were bosch premium but the WR-5791 from motorcraft should be the stock replacement i believe.. what would be causing this hum? its a 97 xlt super cab 4.0 v6
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Old 10-28-2012
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You probably disconnected or ripped the wire to the noise canceling capacitor. I know of the 2.3/2.5 4 bangers the wire is right next to the coil packs.

Check for a loose wire or connection around where you worked in the engine bay.
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Old 10-28-2012
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If you did plugs too, it could be them.
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Old 10-29-2012
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i found it.. when i ran the wires i tried to get them to not touch each other to avoid cross firing at high rpm (read that in my vw beetle idiot guide). the #6 wire had slack in it and i didnt want to just wad it up into that cave passing through the intake so on the plug side i had it loop up toward the firewall.. guess that loop was too close to the speaker wiring so now that cave has a wad of wires in it.. thanks for the help fellas
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Old 02-02-2013
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Quote:
Originally Posted by brc0703 View Post
i found it.. when i ran the wires i tried to get them to not touch each other to avoid cross firing at high rpm (read that in my vw beetle idiot guide). the #6 wire had slack in it and i didnt want to just wad it up into that cave car navigation system passing through the intake so on the plug side i had it loop up toward the firewall.. guess that loop was too close to the speaker wiring so now that cave has a wad of wires in it.. thanks for the help fellas
Hello I did the same mistake but after reading thread I have solved it. Thanks to all

Last edited by Raybas; 02-03-2013 at 12:23 AM.
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