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Subject:LP tank and Skylight
From:Joseph Seitz
Date:Thu, 10 Jun 1999 16:19:33 -0500

Hello all.

I am looking for a LP tank and skylight for my '84 Westy?

Anyone have these used?  I need the whole skylight assembly.  Mine is cracked and
water has gotten inside it and stinks something fierce!  Does anyone recommend
something other than the original?

My LP tank had a small hole in it.  So I need a replacement ideally with the fill
valve as well.

Joe
ps I live in Madison, WI

John wrote:

> john silverman wrote:
> >
> > Well, Vic (90 syncro westy) has been at the local mechanic several times
> > over tyhe last few weeks in a (so far unsuccessful) attempt to pass
> > emissions.  He was able to get the CO down fine, but the Hydrocarbons don't
> > seem to drop, especially at 2500 rpms (part of the test).
> >
> > Dropped the van off yesterday, and he spent time this AM on it.  He just
> > called and said he  couldn't get it down, and he thinks I need a new AFM and
> > O2 sensor.  He's also concerned that there may be a problem inthe digifant
> > brain.
> >
> > Any other thoughts?
> >
> > Thanks...John
>
> John:
>
> My name is John and while its easy to sit back and criticize another's
> diagnosis, I have my doubts that your vanagon's oxygen sensor, AFM &
> Digifant control module have all failed at the same mileage and the
> engine still starts and runs ! Diagnosis by component replacement (AKA
> "shotgunning") is a regrettable and wildly expensive method of
> troubleshooting ! Typically a motor with low CO and high HC is a lean
> misfire and the most common reason is an unmetered air leak. The
> Digifant control module(DCM)is the most reliable part of the system and
> like any computer it conforms to the GIGO rule. Prior to replacing the
> DCM, a pin by pin check should be carried out at the DCM multiplug. If
> your tech doesn't know how to perform a pin by pin or doesn't know the
> values of the 19 DCM pins, you may be talking to the wrong tech ! The
> DCM makes a few assumptions-have these been checked?
>
>         Basic ignition distributor timing correct- 6*btdc
>
>         No unmetered air leaks- what is the manifold vacuum?
>
>         Correct fuel pressure- 2.5 bar with vac line disconnected
>
>         O2 sensor functioning- ~0.2 to ~0.8V "swing" at idle speed
>
>         AFM functioning-~1 to ~5V DCM load signal with engine stopped
>         (air baffle fully closed to fully open by hand)
>
> Good luck and I hope this helps !       JP

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