ohh ass ! . i forgot about that .

1984, 1.9 vanagon

--- David Beierl <dbeierl@ATTGLOBAL.NET> wrote:
> Dave, you need to always say what year you're
> talking about -- some things
> are the same all the way through, some things very
> different.
> At 02:42 PM 5/28/2003, Dave Vieira wrote:
> >Hey,
> >
> >Does anyone know, in the engine compartment on the
> ..
> >left hand side wall its a green box,
>
> Ok, you have a 1.9 litre engine, and that's the Idle
> Stabilizer circuit.
>
> >is that the
> >engine transfer control unit?
>
> No -- but I don't actually understand what you mean
> by "engine transfer
> control unit" -- if you mean the ECU or Engine
> Control Unit, it's a largish
> box mounted just forward of your left-side
> taillight.
>
> >  and is there a way to
> >test it ? ..
>
> Put a timing light on and watch the timing at idle.
> If it's constantly
> jumping around a few degrees that's the idle stab.
> doing its job.  Now shut
> off, unplug the two wires from the idle stab and
> plug them into each
> other.  Drive it -- if it drives better without than
> with the circuit
> likely has a problem.
>
>
> >and beside it is a little black box bolted on a
> plate,
> >what would that be and is there a way to test it ?
>
> That's the ignition control unit.  It takes timing
> information from the
> idle stab unit which gets it from the distributor,
> and it generates the
> powerful pulse to the ignition coil secondary that
> results in a spark from
> the primary.  The metal plate is a heat sink to get
> rid of excess
> heat.  I'm sure there's a way to test it but maybe
> not a simple one.  If
> the engine is producing spark then it is probably
> all right.
>
> david
>
> --
> David Beierl - Providence RI USA --
> http://pws.prserv.net/synergy/Vanagon/
> '84 Westy "Dutiful Passage"
> '85 GL "Poor Relation"

=====
Dave Vieira
Hamilton, Ontario
Canada

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