If you suspect the ISV module, check condition of connections to it.
They may only need a cleaning. Those female spade connectors provide
quite a strong grip to the male spade. Since that part can see
moisture, I suspect these connectors are made that way for good
reason. That said, they can slip out (get pushed out) of the plastic
connector housing when removing, installing the ISV module.

There are methods and specs shown in Bentley for testing the IS
system. mA measurements when loads (AC, PS etc.) are put on the engine
etc. AFAIK, with that system disconnected, the engine should still
idle fine when none of those loads are put on it.

FWIW, first thing I'd look for is a vacuum leak(s).

Neil.

On 5/4/14, mike@bosssolar.com <mike@bosssolar.com> wrote:
>
> Cool. I'm still working out the possible reasons for my idle sitting at
> 2000rpm. I cleaned the Idle valve (which has been unplugged and taped up by
> previous owner) to no avail. Another one is being posted as we speak but if
> the problem is in the module, it would be good to know and figure out how to
> fix it. The modules are a bit costly so i hope it is not that.

--
Neil n

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