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Old 11-12-2015, 06:30 AM   #1
Join Date: Sep 2015
Location: Grand Rapids, MI
Posts: 30
Default Sounds like an angry whale

Exactly as the title says. I'm driving down the road, and when the road noise and wind noise isn't bad, I can hear a humming sound that I've never heard before. Below 30mph I can't hear it, around 45mph it peaks and has a high pitch whine on top of the hum. The whine goes away after I pass 45mph, and the hum gets louder. At first, I thought it was my engine or trans... But, I pushed the clutch in at speed and the sound persisted. So I don't think its those. And the sound is coming from my front end, passenger side. What is it?

The Dread Wolf
'02 SL2 Black 203k
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Old 11-16-2015, 03:41 AM   #2
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Join Date: Nov 2006
Location: Out on the Tiles
Posts: 624

Me gonna guess alternator. Has that low hummmm you just can't place.
Check the output V of your alternator -- should be 14.4 ish. Even if the voltage IS 14.4 it may have lost part of the rectifier circuit. 1 more part and it will cease to function sufficiently to charge the battery.

Take to autozone or similar and have them run a load test on it
97 SC2 ~253K

95 SC2 ~235K +/running-- "All in the Family"

Last edited by derfderf; 11-16-2015 at 04:09 AM..
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Old 06-29-2017, 08:45 AM   #3
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Did you figure it out?
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