Hi Marshall,
Thanks for responding. It's a pretty unusual sound.
Does yours also sound like a cow mooing?
In my case, I heard the sound when the vanagon
was sitting overnight and temp was 35-40 fahrenheit.
I already suspected a bearing.
I was hoping that I might be too pessimistic.
Always took good care of the engine, oil change, etc,
so it comes a bit as a surprise.
At first, I thought it was the air flow meter flap
or something in the air intake vibrating.
But after checking everything, that's not where it's
coming from. It's interesting that you mention a bearing
could make that sound. I always imagined a bearing
sounding more screechy when it goes.
Matter of fact I just made an appointment to replace
the head gaskets, so maybe while the engine is out,
I will have the bottom end checked out too.
Harald
'90 westy
---------
> From: Marshall Ruskin <mruskin@PANGEA.CA>
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Cow mooing in wasserboxer
> Date: Friday, March 24, 2000 7:46 PM
>
> I have something similar - I am told is is a bearing screaming.
>
> Of course, a "cold engine" is relative - mine only does it at about -15 C
> and below.
>
> Marshall Ruskin
>
> >
> >Just wondering if anyone knows this sound.
> >Lately everytime I start up the van, and the engine
> >is cold, it sounds like a cow mooing coming out of
> >the engine compartment.
> >Sort of like this. Moooooo.....
> >It only does it at about 1500 rpms, and then after
> >a few minutes it goes away.
> >Maybe I should buy some hay.
> >Harald
> >'90 westy
> >