From boats82373, You mentioned a bad ground. Would that be in the alternator, the radio, or elsewhere? Both the alternator and radio work fine now. Is it possible for the speaker wires to be grounded against the inside of the door? I ask this because the noise is only coming from the right side front speakers. Any more info you can give me would be greatly appreciated. Thanks
It could either be the ground or the speaker is about to go. Play the
radio with the car off and see what you hear. If you still hear the
static then try tighting all the connection on the alternator. Even
check your battery terminals make sure cabaes are tight. Static is
hard to pin point but its almost always just a loose connection
somewhere. hope this helps
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Static in radios especially if the static varies with RPM.s is a sign that there is a sparking action going on in the electrical system. This can generally be traced back to an alternator that has pitted slip rings and dirty brushes.. Normally it can be fixed by reconditioning the alternator or having an accredited auto electrician attach a small capacitor to the alternator ( Bat terminal for the lead ) with the capacitor bolted to an earth point . Seek advice from the electrician and radio fitting shops .
this sounds like you may have a bad alternator or radio was install wrong.the alternator has a built in condensor to stop the back feed into radio,
I would make sure the radio is installed correctly first, all it takes is a wrong wire in the wrong spot to cause this type of problem, another thing that causes this is if you have an amp connected, the amp must be wired correctly, make sure there is a good ground a soild ground close to amp and power is coming from battery to feed amp and not from fuse box.
SOUND LIKE FAULTY ALTERNATOR. CHECK ALTERNATOR VOLTAGE OUTPUT AT BATTERY SHOULD BE 13.5 - 14.5 VOLTS. IF NOT ALTERNATOR IS FAULTY. CHECK ALTERNATOR BATTERY FEED WIRE AND VOLTAGE REGULATOR WIRES FOR LOOSE CONNECTIONS OR DAMAGED WIRES,CHECK ALTERNATOR FUSE AND MAKE SURE DRIVE BELT NOT SLIPPING DUE TO BAD BELT TENSIONER. TURN OFF RADIO FIRST BEFORE REMOVING NEGATIVE BATTERY CABLE TO KEEP FROM LOCKING OUT RADIO.
sounds like a ground problem. sorry i have no clue where to look and this would be hard to find. the ground will feed back and cause the noise. a fuse will have nothing to do with it. fuse just works until current gets too high and it burns to stop a short from burning wires and possibly the car. is the light flickering at all. what burns out a lamp quick is a lot of off and on that moves the filament and i wears out. if ther is a bad ground to that light it is losing the power then getting power then losing it again. see what i mean. and this action cause noise in the ground of the car which shows up on the radio speakers. good luck
NO. The alternator feeds the battery, not your cars systems. The car systems are powered by the battery and the battery is constantly charged by the alternator. If your radio doesn't have power, check the fuse first, then the hot lead to the radio with a test light do not ry to "spark" the wire to test for power as this will blow the fuse. A radio fuse is only a 5 or 10 amp fuse and is very easy to blow out.. If the radio is getting power then the radio has to be replaced
what is the condition of the battery cables you are probably onto something about a ground but i dont think your ground issue is going to be at the batteries you may not have a good ground on the alternator. The next thing I would check is ... the alternator itself do you know that you are getting between 13.6 and 14.2 volts out of the alternator, a under charge or a overcharge condition both are bad for batteries.
I would check alternator output first if it is not within the above range you need to replace it
If the alternator is putting out in the range of 13.6 to 14.2 then you need to look elsewhere... you may have something draing the batteries overtime interior lights, electric brake controller for trailor brakes if equipped sound system if anything is getting power without going through a switched circuit this could also be your cause.
What kind of feed back ? Does it get louder with RPM . Ignition system can also cause this . But just to be sure have the alternator check for ac voltage ripple .
Ripple voltage is when the DC voltage varies between (for example)12.5 Volts and 13.5 Volts, and does so rapidly. Technically, an alternator produces "alternating current", (hence the name, 'Alternator') and that AC voltage is converted to DC by running the current through a bank of "diodes". Alternator Diode Check and AC Ripple Check