My 87 Vanagon GL Camper normally idles at 1000 RPMs but for some unknown
reason,
it now races to 4000 RPMs at idle. After reviewing the manual, I suspect it
may be the
Idle Stabilizer Valve or Idle Stabilizer Control Unit (behind the right rear
taillight).
I've checked the electrical current continuity of the Stabilizer Valve and
it seems OK.
Both of these parts are expensive to replace so I would like to be sure that
the part I buy
will correct the problem. Anybody have an experience like this?

Thanks in Advance
Billy

56 Type I Standard
67 Type II Camper
76 & 79 Type I Convert
87 Vanagon Camper