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| | | i have a whirring noise, maybe someone has an idea | Joined: Oct 2008 Posts: 465 addict | OP addict Joined: Oct 2008 Posts: 465 | 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? 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 | Joined: Aug 2013 Posts: 233 Likes: 2 enthusiast | enthusiast Joined: Aug 2013 Posts: 233 Likes: 2 | 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 | Joined: Dec 2000 Posts: 3,750 Likes: 13 | Joined: Dec 2000 Posts: 3,750 Likes: 13 | 90 Astro - "The Grey Ghost" - Haulin Ass, Not kids.E-Z Vanners and West Vanners Council of Councils Board Member National Truck-in Board Support Team "No matter where you go, there you are." "If you can't do something smart, Do something right" "There are three kinds of people in the world, those who can count, and those who can't"
| | | Re: i have a whirring noise, maybe someone has an idea | Joined: Jun 2010 Posts: 12,847 Maniac | Maniac Joined: Jun 2010 Posts: 12,847 | Rear end bearings , u- joint , man it could even be a tranny mount etc. Good luck with finding the problem... Proud member: Shenandoah Valley Vans ............" REALITY IS JUST AN ELABORATE ILLUSION".................. | | | Re: i have a whirring noise, maybe someone has an idea | Joined: Oct 2008 Posts: 465 addict | OP addict Joined: Oct 2008 Posts: 465 | Thanks guys, was looking for ideas, will start with those.
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 | Joined: Apr 2010 Posts: 2,847 Likes: 42 veteran | veteran Joined: Apr 2010 Posts: 2,847 Likes: 42 | | | | Re: i have a whirring noise, maybe someone has an idea | Joined: Jul 2011 Posts: 969 Likes: 1 old hand | old hand Joined: Jul 2011 Posts: 969 Likes: 1 | 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.
Gone vannin' I'll call you later.
| | | Re: i have a whirring noise, maybe someone has an idea | Joined: Oct 2013 Posts: 52 journeyman | journeyman Joined: Oct 2013 Posts: 52 | 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.
- Jeff | | | Re: i have a whirring noise, maybe someone has an idea | Joined: Oct 2008 Posts: 465 addict | OP addict Joined: Oct 2008 Posts: 465 | 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. 98 LS1 Corvette motor and tranny, Dakota managed air ride, 4 link, monster notch, full tub.
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