Join Date: Mar 2014
Thanked 153 Times in 140 Posts
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I learned that the radio antenna will whistle and vibrate at times. I was riding down a country road, with rolling hills with areas of high humidity in the low spots. Finally the light bulb came on... I realized that it would whistle when I was going through the thicker air.
Take notice if you hit fog, it really does it. I poked a Styrofoam ball on top of the antenna temporarily to see if it was actually what was causing it. It was.
The bad thing was that the noise sounded like it was coming from inside the truck. It made it very hard to figure out.
Ordered Sept 26: 2017 F350 CCSB King Ranch 6.7
2002 F250 ECLB, XLT, 7.3 PSD, 4X4, Auto, TW 6pos. Tuner, 4" SS Exhaust, Britebox, EZ Down tailgate assist, Rear Air Bags, 6.0 trans cooler, Wicked Wheel 2, Corey's HPX, Dieselsite Water pump w/built-in filter, 203 degree thermostat, Max A/C assist, Oil drain valve, Non EBV pedestal & Flange, S.S. bellowed up pipes, Dieselsite Lifetime Rad. hoses & Intercooler hoses, New oil cooler, CTS Insight monitor,