Good day all,

The Hyena (88 Westy WBX)�  started racing at idle (from 1100 climbing to
2500 last summer).�  If you were at the back of the van and pushed the
throttle hard closed - sometimes wiggling it - the van would fall back
into an idle.� �  With the engine shutdown, you had to do the same to hear
the click of the TPS.

This morning, I replaced the throttle body with a new GoWesty unit.�
Things were fine for the first test run.�  After lunch, I restarted the
van and it began surging at idle, but differently than before.�  The WBX
will surge to 2200 - 2500 RPM, but after 1-2 seconds falls back to
idle.�  Rinse and repeat.

I unplugged the 12v from the idle control valve and the engine remained
at idle.� �  I removed the idle control valve; cleaned it with carb
cleaner and tested it with 12v leads (valve appears to move).�  I
re-installed the valve and the same thing happens.

So, is it possible the spring is too weak and the valve is bad ... or is
my problem likely to be elsewhere (i.e. idle control unit) and more
expensive?

What's the impact of running with the power to the idle control valve
disconnected while I await a new one?

Roy