Re: Trials and tribulations

[rr <RRauscher@nni.com>]

Actually, I think that it may be a teflon type of insulation, well aged
of course. . . I found it's best to heat it with a lighter before stripping.
This stuff is spliced onto the end of the normal pvc wire right before
the tbi. It is exposed to a lot of fuel, sitting in the top of the tbi above
the injectors.

This is from the '88-90 full size Chebbie vans with the v8's. The v6
Astro's use the same stuff. Come to think of it, I've seen the injector
connectors burned (as: on fire once), but not the wire insulation.
Maybe it is the teflon insulation.

BobR.


Garfield Willis wrote:

> On Sun, 25 Jun 2000 11:22:06 -0400, rr <RRauscher@nni.com> wrote:
>
> >The TBI uses some killer
> >insulation on the wires to the injectors, apparently so it doesn't
> >melt with the exposure to the fuel. This makes it hard to splice
> >and easy to break the wires.
>
> Hmmm, not sure what that would be. Both PVC (80degC) and the higher temp
> polyethylene insulation (125degC) used on SAE J1128-rated automotive
> wire are naturally fuel/oil resistant. I take it from your description
> that it really does look like a different kinda wire? Anybody know what
> kinda wire that might be, or perhap it was just aged? Was the wire new
> or old, Bob?
>
> >After much time trouble-shooting a no-to-hard-start condition,
> >I found the injector wire splices broken. ...
> >The ends were still butt together, apparently the engine vibration
> >was enough to keep them touching so that once started, the
> >engine would run.
>
> Ho ho, good sluething! Gawd, I HATE intermittents, especially ones that
> hide under vibration. I can imagine how good you musta felt when you
> found out where that gremlin was hiding, and squished it. :)
>
> Gar
>

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