Date:         Tue, 22 Aug 2017 14:13:23 -0400
Reply-To:     David Bohannan <fjazzbass@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Bohannan <fjazzbass@GMAIL.COM>
Subject:      Re: Hummmmm @ 50-55 ish, 85 manual
Comments: To: David Boan <dboan@outlook.com>
In-Reply-To:  <MWHPR12MB1629C692C15958475D72BF77BA840@MWHPR12MB1629.namprd12.prod.outlook.com>
Content-Type: text/plain; charset=us-ascii

Thanks!

Yep, I've heard THAT hum before, but I just changed the filter out, and it just "feels" like it's coming from driveline- I'll pay closer attention when it happens though for fp noise... that's howled for me in the past even at idle after a hot run...

Dave

> On Aug 22, 2017, at 2:10 PM, David Boan <dboan@outlook.com> wrote:
> 
> The fuel pump is a common source of a hum when the fuel filter is becoming clogged.  It will be constant and not vary with speed or rpm.
> 
> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> on behalf of David Bohannan <fjazzbass@GMAIL.COM>
> Sent: Tuesday, August 22, 2017 2:04:46 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Hummmmm @ 50-55 ish, 85 manual
>  
> Books,
> 
> Just what the subject line says.
> 
> I've developed a hum when under way whether the van is in gear or not. I've recently changed a front inner and outer bearing and degraded ball joint but alas, the noise continues. It's also a bit intermittent. Comes and goes with leaning to one side or the other, but no specific rhyme or reason. 
> 
> Bearings? Transmission? This noise was there prior to swapping my engine recently and I thought would fix with parts known to be bad ...
> 
> What thinks the experts on where I should put my hands next?
> 
> Thanks in advance!!!
> Dave
> 85 gl, Baby Bus