Re: Idle fluctuates - sticky ISV

[Jeffrey A Blanchard <jblancha@u.arizona.edu>]

On Sat, 11 Apr 1998 four.rings@MCIONE.com wrote:

> What's the consensus on disassembling the ISV, is it doable at all?
> [snip]
> Looks like I damaged whatever was inside the ISV. Has anyone ever
> successfully taken it apart AND reassembled it back?

[Experience based on 1986 CGT] 

I figured that I had nothing to loose taking it apart and trying to fix it
myself, so I gave it a shot.  It is a simple task to pry up the tabs
holding it together.  I pulled out the armature and noticed that the
commutator had a "bad" spot in it from oxidation and wear where it wasn't
making contact.  I cleaned it up the best that I could with steel wool and
put it back together. 

This fix lasted for about 6 months, when it started acting up again.
After fixing it three times, I finally just bought a new one.  The
commutator had burned completely through the copper contact and at that
point I didn't have any idea how to fix it.

If you have nothing to loose, give it a try!  It is really a simple
device.  Just be careful to mark the alignment of the parts so that you
get it back together properly.


Jeff Blanchard
86CGT