mazdaverx713b

iTrader: (91)

in my 80 ls when i turn the radio on i can hear the song but there is this awful constant buzzing. even when i turn the volume all the way down the buzzing remains the same. it is a stock factory radio. what could be the problem? i suspect a faulty ground. where should i begin to look? it has the original plugs and wires(only 57K on the car, it is pretty much mint i have heard cases in which this caused radio interference, but they are the correct p/w). thank you, dave

John64

I would say ground too. But remember it is 23 years old now. The radio could just be going bad!

mazdaverx713b

iTrader: (91)

this is true..... lets hope not..

inittab

I had this exact same problem and it went away when I replaced all my spark plug wires.

mazdaverx713b

iTrader: (91)

well, i will give that a try. i didn't want to replace many of the original parts, as about 95% of the car is factory original. i suppose it can't hurt. the car runs perfect. you could balance a glass of water on the air cleaner and it wouldn't even think of jarring off. i'll order a new set and keep the old ones as spares. my garage is littered with boxes and bins of spare parts. i am an rx-7 parts pack rat.

BigJim

Does the buzzing noise change at all if u rev your car up or get on it. If it does, check your fuel pump ground, thats happened on a few other cars of mine. The pump grounds through the stereo and u get to hear everything it does.

mazdaverx713b

iTrader: (91)

i'll look into that when i go to the store this morning and get back to you on that.

©ØÐËߣüË

iTrader: (1)

i had the same thing happen to me in my first RX-7. mine was buzzin cuz i had bad distributer wires . once i changed the cap and wires it went away.....

mazdaverx713b

iTrader: (91)

the buzzing does not change, it remains constant. i even tried it under load. i ordered a new set of ngk wires this morning. we'll see if that helps. if there are any other suggestions, i am all ears. thank you.

Steve Shulz

Wow, you could buy two radios for the price of wires, dizzy cap and plugs. CD players these days will play mp3's too.

mazdaverx713b

iTrader: (91)

i paid 27.00 for wires from mazdatrix. i will pick up the cap and rotor button tomorrow.

mazdaverx713b

iTrader: (91)

buzzing remains constant when car is not running and radio is on. i think i can rule out the wires. any suggestions?

inittab

hmm..... what about the condensor? It's mounted to the engine block right next to the clutch master cylinder.

mazdaverx713b

iTrader: (91)

i am not sure what you are talking about inittab.??? what is it's function?

inittab

it's function, believe it or not, is to quiet down the radio noise. lol

EDIT- Victoria British sells 'em.

mazdaverx713b

iTrader: (91)

well, is it only for 79-80 models? i will check on it when i get home on monday.

inittab

They're on all FB's. It's actually the first thing I replaced when trying to qwell the radio buzzing noise I had. It's a small silver cylindrical device that's mounted to the engine block right near the clutch master cylinder. Ya can't miss it. It didn't fix my buzzing sound but it's worth a shot. Good luck!

mazdaverx713b

iTrader: (91)

well, i looked and could not find it. do you have a pic? i saw something mounted to the left side in the engine bay, almost up to the firewall. it was almost bell shaped and had a connector that trailed down into another connector. i thought that may be it but remembered you had said it was on the block.

schreindogg

iTrader: (1)

Dave, I remember that condensor. It was that piece that we were wondering about on that locked up motor that we ATF'd. I think we left it on the motor, so we can try swapping it tomorrow when you get back.

mazdaverx713b

iTrader: (91)

good call man. not like i have 3 extra motors or anything?!

mazdaverx713b

iTrader: (91)

turns out it was a bad amp..who knew..only took 6 years to figure that out and ressurect this ancient thread.

blackdeath647

iTrader: (2)

lol, damn i'm glad you figured it out tho.

mazdaverx713b

iTrader: (91)

yeah i figured it out in 04, i guess i just forgot to post. a buddy of mine reminded me of this thread and suggested that i update it..so i did. i guess a channel in the amplifier is bad causing the buzzing.