October 8, 200322 yr My 93 legacy has a terrible electrical whine that varies with rpm, already changed the plug wires and plugs, no change. Could it be an alternator?
October 8, 200322 yr Get a mechanic stethiscope and start probing. Sticking your head under the hood will only locate the general area, at best.
October 9, 200322 yr Author it's an electriacal whine type noise only when the engine runs, even if the radio is off. Changes with rpm and sounds like a classic case of bad wires, even though 2 new sets were put on. Since I drive 1000 miles a week it's driving me nuts. It's louder when the lights or fan ac are on. but with everything off and the engine on, it's still there. It's not a whistle or leak.
October 9, 200322 yr Please take my advice and stop throwing parts at a problem you havent even diagnosed fully. Instead of buying a $70 alternator you could have bought a $10 needle stethiscope and figured out what exactly is making this noise.
October 9, 200322 yr This eliminates accessories usually. Power steering pumps are great for noises like this.
October 10, 200322 yr I had a whine in my 93 legacy that I swore was electrical. Turns out it was the water pump.
October 10, 200322 yr Author I didn't pay for the alternator and other wires, they were swapped from another legacy. PROBLEM GREATLY MINIMIZED: don't know what the cause is but a 5 dollar choke from radio shack spliced into the powerline to the radio got rid of 90% of the whine. Seems something was getting through the system (even off) and was interfering all the way up to the speakers. Definately some sort of interference that was not there before, with no new items installed!!!
October 10, 200322 yr Does your car have an antenna in a glass window? I think I read where those may have a remote amplifier of some type and could perhaps have failed/lost a ground or something. Or does your sound system have a remote amp that has lost a ground? Even though your radio is off, try pulling the fuse too. just guessing Carl 1 Lucky Texan
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