ISV questions

["Jim Haseltine" <Jim@ur-q.freeserve.co.uk>]

What sort of voltage/current/signal should an ISV get?

I've been playing around tonight trying to get the coupe to idle a bit
better. The ISV supply hovers around 3.5 - 4 volts and the unit doesn't make
any difference if it's powered or not. I've tried swapping in the ISV from
my 88 Ur-q (same unit  #035 133 455F) and this makes no difference. Before
you ask, I can't test the coupe ISV in the Ur-q 'cos the engine is in the
process of being stripped.

Jim Haseltine