> From:    C B <cunegonde.van.westfalia@GMAIL.COM>
> Date:    Thu, 24 May 2007 17:35:21 -0700
>
> Replaced the waterpump in my 1.9l WBX with no more than the expected
> annoyances.  [...]
>
> a) What is the new loud clicking noise coming from my engine that
> varies with engine speed?!

Are you sure that it's coming from the engine?  You might let the van
sit overnight, take off all belt(s), and start it up to see if the noise
is still there.  Don't drive to Honolulu and back like that, but running
the engine for a minute or so is OK.  Maybe you just got a pulley back
on a little loose or crooked or something simple like that.

> b) Post overheat, my O2 sensor light is on and the engine is running
> very rich (judging by smell). The PO somehow damaged the O2
> sensor-to-green wire connector so almost all the wires are broken on
> the harness side if the connector. Do I connect the black wire to the
> wires running free inside the green wire in the harness, or to the
> inner green wire inside the same green insulation?

I can't quite tell from your description, but it sounds like you have
a shielded one-wire cable.  Are the "wires running free" bare and woven
together?  If so, that's the shield.  It is there to keep interference
out of the O2 sensor signal, which is a very tiny signal.  The inner/
center wire is the signal wire and that's the one that needs to go to
the one wire coming from the O2 sensor.

You could also have the wiring on the harness side for a heated O2
sensor (three wires) but I think an '83 1.9L is too early for that -
I could be wrong.

Matt Roberds