Hi all:

2002 Expedition w/ factory sound system. This just started a few days ago. When I first start the engine, and step on the brake pedal, the radio plays static. I can apply and release the brake pedal, and the static comes and goes in synch. After about 5 seconds of applying the brakes, the static goes away, and stays away until the next time I start the truck. I've reproduced this several times. It doesn't matter if I hold the brakes on continuously, or press and release them multiple times. After about 5 seconds of brake application, the static goes away. It's like something is discharging when I press the pedal.

I can't even guess what this might be, or whether it has to do with the harness in the truck or a failing component in the sound system. Ideas?

Thanks in advance,
John.

 

i would say you eater have a bad or broken ground some ware. or you have a wire that is wearing through and grounding out but not enough to pop a fuse

 

Well, whatever it is, it's getting worse. Now, it randomly happens while driving, too. And, it sometimes happens for longer. I guess hoping it'll go away isn't working.

 

I found the problem, I think. This problem started soon after I redid the front suspension. The plastic brackets that go on the tops of the front shocks, that hold the wheel speed sensor cables, broke when I attempted to remove them. I'd temporarily zip-tied the cables in place, but needed to make a bracket to keep them from moving around. I spent some time last weekend tidying up the cables, and made a little bracket to attach them to the shock ends with P-clips. The problem disappeared immediately, and hasn't returned since. The cables aren't worn or kinked at all. But somehow, having them loose must have caused the interference.