audipwr1

997 GT3

Aftermarket stereo, but disconnected amp and unplugged speaker wires from amp

Standing still or standing still and revving - no noise

Car physically moving (in gear, out of gear, revvin or not) it all of a sudden is making a whining noise like a mosquito - appears to be from in dash area can tell if from speaker or not

Any help?

audipwr1

Even when car off it's doing it and you roll the car in the acc mode of the ignition

Just had tires changed didn't notice it before but not sure if it was there before or not

s0ggyfish

997.1 GT3 here with the same symptoms. Aftermarket stereo as well. It's slowly driving me insane. Let me know if you get it figured out.

My car was in the shop yesterday for tech inspection but unfortunately they didn't get a chance to look at this before I had to pick it up. I think mechanic said it may be a relay but that he'd have to get into the dash to figure it out.

audipwr1

I tweaked two things

1 moved battery ground wire further away from wiring harness

2. Moved speaker wire further away from airbag wiring harness under seat

Also did a battery disconnect

Problem gone