You might check the idle switch on the throttle - it should give
 either infinite resistance or 0 (I can't remember which right now
 - I plead lateness) with the throttle closed. Its job is to tell
 the engine when the throttle is closed and if the rpm are above a
 certain preset limit the computer cuts the fuel completely (by
 letting the injectors remain closed) and doesn't start it flowing
 again until the rpm comes within idle range. Could be the thing
 is flooding and hence reluctant to take off again at the bottom
 of the hill. 'Course you did say no black smoke, but have you
 looked for that, and would you see it travelling at a goodly
 clip? Usually it takes someone else watching from behind to spot
 it. And the smoke would clear as soon as the engine was off idle
 for a few seconds...

 Coby Smolens, Owner
 Valley Wagonworks
 VW Bus and Vanagon Repair
 1535 Sir Francis Drake Blvd.
 San Anselmo, CA 94960
 415 457-5628
 http://wagonworks.com

> > -----Original Message-----
> > From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf
> > Of Mark Gajewski
> > Sent: Wednesday, June 02, 1999 8:00 AM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: bogging/stumblin after long descents
> >
> >
> > My '85 GL has had a weird condition for quite a while now....after long
> > downhill descents (3/4mile+) with my foot off the throttle the
> > motor doesn't
> > run properly when I reach flat ground again.  When I put my foot
> > back on the
> > thottle the motor feels sluggish, sounds bogged down and stumbles
> > and bucks
> > alot.  This bogging etc. then lasts for about a mile or two
> before finally
> > going away as quickly as it came.  I'm guessing it may be the weak AFM
> > spring trouble that I have seen frequently posted.  Does this
> > sound like the
> > likely culprit?  Otherwise, though everything seems fine...I get good
> > mileage, no black smoke, pass emissions tests etc.
> > Thanks,
> > Mark
> >