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i have a whirring noise, maybe someone has an idea
#649366 January 21st 2014 2:01 pm
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My van makes a whirring noise when I'm on the gas above 50mph and does get louder the faster I go. Sounds like it is rotational, I have 4.11 gears. The noise stops when I am coasting. Wheel bearings?


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98 LS1 Corvette motor and tranny, Dakota managed air ride, 4 link, monster notch, full tub.
Re: i have a whirring noise, maybe someone has an idea
Bruiserman #649386 January 21st 2014 7:39 pm
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The noise stopping when it is coasting would point to something driveline related that is making noise when loaded. I would grease u-joints, driveshaft slip yokes (if you have these), and rear end gear oil. I am assuming your van is rear wheel drive. AWD would include other things to check.



1992 Chevy G20, 110" wheelbase, Mark III conversion, L31/4L80e swap, Express wiring harness.
Re: i have a whirring noise, maybe someone has an idea
Bruiserman #649391 January 21st 2014 9:09 pm
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could be the rear end


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Re: i have a whirring noise, maybe someone has an idea
Astro #649394 January 21st 2014 9:32 pm
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Rear end bearings , u- joint , man it could even be a tranny mount etc. Good luck with finding the problem...


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Re: i have a whirring noise, maybe someone has an idea
Bruiserman #649396 January 21st 2014 10:11 pm
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Thanks guys, was looking for ideas, will start with those.


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98 LS1 Corvette motor and tranny, Dakota managed air ride, 4 link, monster notch, full tub.
Re: i have a whirring noise, maybe someone has an idea
Bruiserman #649402 January 22nd 2014 12:08 am
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I vote for the U joints.

Re: i have a whirring noise, maybe someone has an idea
Bruiserman #649413 January 22nd 2014 5:41 am
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Does it "clunk" going into gear? If so, it's most likely a U joint. As for whining at load it sounds like the rear axles ring and pinion aren't matched up correctly anymore. Things come loose.

Jiggle the drive shaft up, down and around at the pinion. If it wiggles, new bearings are most likely needed but it honestly sounds like the ring and pinion are about to go.

Good luck.


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Re: i have a whirring noise, maybe someone has an idea
Bruiserman #649448 January 22nd 2014 4:17 pm
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Is it just a sound, or is there also a vibration? I recently did a 2/4 drop on mine. Shorter coils up front and a spring under with drop shackles. I had a very nasty vibration starting at 50. I re-clocked the drive shaft 180 and the vibration was much less noticeable. I think I need to get some shims to reset the pinion angle too.


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Re: i have a whirring noise, maybe someone has an idea
Bruiserman #649500 January 22nd 2014 11:09 pm
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It's really a resonating sound and not a whine. Seems to do it at lower speeds too if I listen real closely. Today on my way home from work I did get a vibration around 50mph, almost like tires need balanced and when it shifts gears it's not always smooth. Sometimes you can feel it a bit when it goes into gear. I'm going to take a look at the U-Joints first. That's something I know I can take care of easily.


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98 LS1 Corvette motor and tranny, Dakota managed air ride, 4 link, monster notch, full tub.
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