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nacradriver
Samba Member
Joined: January 15, 2009
Posts: 761
Location: Ventura, CA
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 Posted: Wed Jan 18, 2012 3:35 pm Post subject: Things that go Hmmmmmmmmm! |
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Still looking....
Test drove a Westy today that was making a HMMMMM Whiiinnnnning noise when accelerating in all gears. The owner said is goes away after a while, but we drove the van for a good half hour on city streets and freeway and it didn't.
I know this is a broad question but any ideas what it could be... tel-tale sign of a gearbox getting ready to go or something as benign as changing out the gear box oil?
Thanks |
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Wellington
Samba Member
Joined: September 21, 2004
Posts: 2009
Location: Montreal
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| Posted: Wed Jan 18, 2012 3:37 pm Post subject: |
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Sure it is gear box related??
Wheel bearing?? |
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madspaniard
Samba Member
Joined: August 18, 2008
Posts: 3795
Location: Alameda, CA
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| Posted: Wed Jan 18, 2012 3:46 pm Post subject: |
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manual or automatic?
_________________
1991 Westy auto w/ Peloquin TBD
"The only difference between me and a madman is that I'm not mad” - Salvador Dali |
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j_dirge
Samba Member
Joined: August 08, 2007
Posts: 4641
Location: Twain Harte, CA
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| Posted: Wed Jan 18, 2012 4:07 pm Post subject: Re: Things that go Hmmmmmmmmm! |
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| nacradriver wrote: |
| HMMMMM Whiiinnnnning noise when accelerating in all gears. |
If its singing under load only?
Transmission rebuld in the near future.
Mine (manual) is beginning to do this... in 2nd gear mostly.
Might be something really simple though, too.
Could be losse bellhousing bolt(s).. or something loose, laying in cintact on the case making a resonant hum.
Any more info?
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| danfromsyr wrote: |
those are straight line runs with light weight race cars for only 1/4mile at a time..
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NZer
Samba Member
Joined: January 17, 2012
Posts: 88
Location: South Western Ohio
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| Posted: Wed Jan 18, 2012 4:12 pm Post subject: |
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| Wellington wrote: |
Sure it is gear box related??
Wheel bearing?? |
Ditto
Dose the HMMMMMMMMMM change pitch with engine RPM or with the speed of the Van? Or is it constant.
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A sad looking 88 Westfalia, MT 2.1 with 150k on the clock and several issues! |
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nacradriver
Samba Member
Joined: January 15, 2009
Posts: 761
Location: Ventura, CA
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| Posted: Wed Jan 18, 2012 4:34 pm Post subject: |
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| madspaniard wrote: |
| manual or automatic? |
4 speed manual with a little bit of a grind getting it into second…
| j_dirge wrote: |
If its singing under load only?
Transmission rebuld in the near future.
Any more info? |
Only happened when it was under load, when we coasted it was not there. And it did change pitch when we spooled up to a higher speed. I didn’t back the van up and will do that when I go back to get a better look at it. At idle it is not there either
Thanks for bringing up wheel bearing; I remember the bearings on my boat trailer making a similar sound, but this would have been present when we coasted as well..
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madspaniard
Samba Member
Joined: August 18, 2008
Posts: 3795
Location: Alameda, CA
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| Posted: Wed Jan 18, 2012 5:09 pm Post subject: |
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what about fuel pump and filter?
_________________
1991 Westy auto w/ Peloquin TBD
"The only difference between me and a madman is that I'm not mad” - Salvador Dali |
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SCM
Samba Member
Joined: January 26, 2011
Posts: 3408
Location: Bozeman MT
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| Posted: Wed Jan 18, 2012 5:11 pm Post subject: |
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| madspaniard wrote: |
| what about fuel pump and filter? |
When mine were making noise the pitch didn't change with engine load or rpm.
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'91 Westfalia GL Automatic (GTA "Turbo" Rebuild w/Peloquin) and 2.3L GoWesty Engine |
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onslowb
Samba Member
Joined: November 20, 2006
Posts: 315
Location: Woodland Hills
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| Posted: Wed Jan 18, 2012 5:26 pm Post subject: |
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| Mine has always had that noise. It does it at certain RPM's when accelerating, decelerating, and when just revving the engine. I always thought it was a normal engine noise....could be an alternator, AC, or power steering pump going bad though? What should a stock 2.1 sound like? |
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nacradriver
Samba Member
Joined: January 15, 2009
Posts: 761
Location: Ventura, CA
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| Posted: Wed Jan 18, 2012 5:27 pm Post subject: |
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| madspaniard wrote: |
| what about fuel pump and filter? |
Could tell ya! I was in my work clothes (Brooks Bothers) and couldn't get under the van or start ripping into it for a closer inspection. |
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levi
Samba Member
Joined: February 11, 2005
Posts: 5522
Location: Las Vegas
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| Posted: Wed Jan 18, 2012 5:43 pm Post subject: |
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Kinda sounds to me like pinion bearing in the trans.
Is it most pronounced in 1st and 2nd ?
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J Charlton 
Samba Member
Joined: August 24, 2007
Posts: 1546
Location: The True North Strong and Free
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| Posted: Wed Jan 18, 2012 6:49 pm Post subject: whine |
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Fuel Pump. Stick your head under the van just inboard of the sliding door. If it is the fuel pump it'll be obvious as to where it is coming from. If it is the fuel pump the bigger question is why is it buzzing? Clogged filter? Why is it clogged? Crud in a 25 year old fuel tank? Real good possibility.
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nacradriver
Samba Member
Joined: January 15, 2009
Posts: 761
Location: Ventura, CA
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| Posted: Wed Jan 18, 2012 6:51 pm Post subject: |
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| levi wrote: |
Kinda sounds to me like pinion bearing in the trans.
Is it most pronounced in 1st and 2nd ? |
Yeup...... |
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