Strange Feedback sound
#1
Strange Feedback sound
Heres a wierd one. I noticed it a little here and there over the past couple of months, but now happens more frequently. If you ever hold two microphones close and get that annoying feedback sound, that is pretty much it. At first I though it was radio station, then I thought it was the radio but I turned off a few times and it still does it. Lasts about 2 seconds, seems to do it more now that its cold. It does sound like its coming through the speakers though. Any ideas? Not sure where to start on this one.
#2
Senior Member
Heres a wierd one. I noticed it a little here and there over the past couple of months, but now happens more frequently. If you ever hold two microphones close and get that annoying feedback sound, that is pretty much it. At first I though it was radio station, then I thought it was the radio but I turned off a few times and it still does it. Lasts about 2 seconds, seems to do it more now that its cold. It does sound like its coming through the speakers though. Any ideas? Not sure where to start on this one.
#4
Senior Member
Check the grounding strap to your alternator. If it's fine, unplug the alternator and run the motor BRIEFLY (you don't want to kill the battery). See if it's still there.
#6
Senior Member
#7
Checked all grounds they all seem good. Did a little more research and seems some guys with F150s had a alternator whine when it started to go. I tested the battery when running and it was at 15v...so a touch high but not crazy high.