I recently bought a 1991 firebird with a 305 tbi. It has the stock head unit and as soon as you turn it on there is a loud static coming from the front right speaker. The static also stays the same volume no matter how you turn the ****. Is there any known issue that would cause this? I unplugged the speaker temporally but if I can fix the head unit that would be fantastic. Any ideas?

 

This is going to sound crazy...but if someone did the front brakes and didn’t bend the cotter key over far enough, it will make a static sound on your radio. I have no idea why or how but it happens.

Obviously before going that route check to make sure you don’t have a bad speaker or a bad ground.

 

Since there IS sound on the right front, it *might* be bad right side capacitors. Could also be a bad right AMP or possibly even a bad rheostat **** control.