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Weird "harmonic" vibration in '80 Brat
Posted 10 June 2007 - 07:51 PM
When I'm going any faster than 65 mph, my Brat makes this weird kind of noise. I've only heard it once before, on my pickup that had a bent driveline, and a cracked transfer case, so it was causing what the driveline repair guy called a "harmonic" vibration. I'm not quite sure how to explain it to you.
If you have a table top fan, when they are running, they kind of change pitch, but the speed it's rotating doesn't change.......so it makes a kinda whirring sound. I hope you get the idea.
The car doesn't shake or rattle or anything like that, it just makes a strange humming noise. I don't know if it's in the motor or what.
What the hell could this be? Is it serious? Is it dangerous? Is something going to fall off the car? Is it going to implode/explode? Am I just going insane and hearing things? Help?
Posted 10 June 2007 - 10:48 PM
Have you noticed any change in the height of the brat. When my 86 dropped down in the rear from rust it started making a weird vibration and noise similar to this from the change in the angle on the driveshaft
Posted 10 June 2007 - 10:54 PM
Posted 10 June 2007 - 10:58 PM
Posted 10 June 2007 - 11:00 PM
Posted 10 June 2007 - 11:01 PM
Hah, I got nipper. LOL. No carrier bearing on these. Straight up one peice driveshaft
Posted 11 June 2007 - 08:52 AM
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