Hi
Tom,
It
sounds like it could be a static charge in the AFM which is solved with =
adding
an adapter (I got mine in 95 for $125). I have a 90 GL I am not =
sure if
this fix is applicable to your but it sounds like it
Jere
90
GL
88
GL
I just returned from a =
Thanksgiving
week trip from central Illinois to Silverthorne, CO and back -- about =
2400
miles in all. The van handled the job remarkably in most =
respects.
Mileage was 17.7 mpg on the westward leg (uphill with an occasional =
west wind)
and 20.1 on the return (downhill with the same wind). This fall, =
I redid
the valve adjustments and installed a new, more accurate fuel pressure =
regulator. I couldn't be happier with the mileage and =
performance in
general.
However, when driving for extended periods of time =
with the
cruise control on, I began to experience Vanagon syndrome. =
Sometimes
just a little hiccup every now and then but occasionally a =
gut-wrenching, rod
throwing, valve sticking sensation that forced the foot to the clutch =
pedal
and that van to the side of the road while I listened for expensive
noises. I fiddled with turning the key off and coasting for a =
few
seconds and with varying the speed and that seemed to help so I'm =
pretty
certain it is Vanagon syndrome. I have the info on how to fix =
this with
the tantalum capacitor so I'll attack it before a trip to =
Florida and
back for Christmas.
Another problem occurred that I have not =
seen
mentioned on the list. If, after sustained driving at speed with =
the
cruise on, I pulled off onto an exit ramp and slowed down, the van =
would not
rev smoothly. It would idle, occasionally stall, and rev very =
slowly
regardless of the pedal position until it reached 3k or so and then it =
would
rev at higher rpms OK. When I stopped for gas or to eat and the =
van
cooled down, it would rev OK until I got on the highway. I said =
"cool
down" but the engine was not hot, the needle was mid point-between the =
light
and the marker on the cold side and the outside temperatures were in =
the 30-60
range. I don't think it was heat related.
Could =
this be
related to the Vanagon syndrome, which I understand is caused by =
static
electricity affecting the FI computer? Both problems seemed to =
go away
when the engine was not running for 15 mins. or so. I plan to =
check the
AFM tracks as well. Any thoughts are =
appreciated.
Tom
'71
Westy, '85 Westy, '91 Carat