Responding only to be sure your message gets to the list.  It was in my junk.

Looking forward to helpful answers.  

Eric 

> On Jul 27, 2021, at 1:24 PM, Roy Nicholl <RNicholl@NBNET.NB.CA> wrote:
> 
> 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