High pitch noise from the dash/stereo, intermittent, may be because of voltage
High pitch noise coming from the dash/stereo, intermittent, my alternator was rebuilt recently (the same volvo alternator but with some new parts, relay, regulator, brushes) and I think it is because it generates to much voltage, I also have a couple of codes related to the alternator, the battery sits at 13-13.22V when off and 14.95-15.2V when on. I think it may be overvolting the car and it shuts off the stereo/AC system for a second or 2 and then goes to normal for a while (I saw a mention of this issue on the volvo forum but I want to be sure if this is the cause) I think it may have a wrong regulator installed. What do you think?
High pitch noise coming from the dash/stereo, intermittent, my alternator was rebuilt recently (the same volvo alternator but with some new parts, relay, regulator, brushes) and I think it is because it generates to much voltage, I also have a couple of codes related to the alternator, the battery sits at 13-13.22V when off and 14.95-15.2V when on. I think it may be overvolting the car and it shuts off the stereo/AC system for a second or 2 and then goes to normal for a while (I saw a mention of this issue on the volvo forum but I want to be sure if this is the cause) I think it may have a wrong regulator installed. What do you think?