Rfi

Topic: Rfi (Read 793 times) previous topic - next topic

Rfi

July 09, 2008, 08:07:50 PM

I am getting the RFI "whine". I replaced the spark plug wires, distributor cap, and coil and it didn't seem to change anything. Is there something I can install to defeat this noise or upgrade any additional parts (alternator, etc) to stop this from happening?

Rfi

Reply #1 – July 09, 2008, 09:19:52 PM

Get a test machine on your alternator, you might have a dead phase or shorted diode. Check the ground straps between the engine and body, and make sure the battery cables are not corroded (especially the ground cable where it connects to the body). Make sure your stereo has a good, solid ground. Other than that, about all I can suggest is installing a noise suppressing capacitor (available at any stereo shop).

Rfi

Reply #2 – July 12, 2008, 11:08:37 PM

Quote from: Thunder Chicken;226678

Get a test machine on your alternator, you might have a dead phase or shorted diode. Check the ground straps between the engine and body, and make sure the battery cables are not corroded (especially the ground cable where it connects to the body). Make sure your stereo has a good, solid ground. Other than that, about all I can suggest is installing a noise suppressing capacitor (available at any stereo shop).

Noticed something the other day. The whine seems to be directly related to the RPM of the engine. It mirrors the revving of the engine going through the gears. Is this normal and I am now just noticing? Or can this be attributed to a specific part?

Rfi

Reply #3 – July 12, 2008, 11:52:23 PM

Run it with the fan belt off. (not long enough to overheat)
If the noise goes away it's the alternator.
If you still have the noise it's the ignition.