AHA! The standard Roadster grounding problem. Thanks, Gordon.
- Bob
Gordon Glasgow wrote:
>
> Bob, the fact that the gauge will peg when the wire is grounded still doesn't
> mean that the correct signal is getting to the gauge. The biggest problem with
> roadster temp gauges is not getting a good ground at the sending unit, which
> will make the gauge read low.
>
> Bob Mann wrote:
>
> > Tom -
> >
> > On the gauge issue, just to clarify, it reads properly. That is to say,
> > it reads the temp it sees up top at the head, which was apparently not
> > elevated. When grounded, it reads full scale.
> >
> > Based on the FAQ, I am about to pull the radiator, just to remove that
> > issue.
> >
> > - Bob
> >
> > Thomas Walter wrote:
> > >
> > > >Thanks, Toby. What's odd, is that in this case, the hose is collapsing
> > > >while under pressure.
> > >
> > > Bob,
> > >
> > > Usually when I do see that happen, rare with a roadster, I suspect
> > > a bad hose. Since you have a new gates hose, I would not suspect
> > > it is the hose... but hard to tell.
> > >
> > > As someone pointed out the older hoses had wire springs inside them
> > > to prevent the collapsing of the hose. Nissan never used the spring,
> > > but it was common on aftermarket hoses. Newer hoses rarely have
> > > the spring, as it seems they have improved the hose itself.
> > >
> > > Your original question wondering about the radiator condition seems
> > > reasonable. If in doubt, might be simple to pull the radiator and
> > > have it rodded out.
> > >
> > > Since your temp gauge was not functional, hard to know if it has
> > > been running hotter over a period of time, or just recently. When
> > > I see a roadster suddenly running hot, not a bad idea to check
> > > the ignition timing and mixture settings (pulling the plugs to
> > > look will give you an idea).
> > >
> > > Cheers,
> > >
> > > Tom
> >
> > --
> > - R.W. Mann & Company, Inc. > Airline Industry Analysis
> > Port Washington, NY 11050 > tel 516-944-0900, fax -7280
> > mailto:Bob_Mann@RWMann.com > URL http://www.RWMann.com/
>
> --
> Gordon Glasgow
> Renton, WA
> http://www.gordon-glasgow.org
--
- R.W. Mann & Company, Inc. > Airline Industry Analysis
Port Washington, NY 11050 > tel 516-944-0900, fax -7280
mailto:Bob_Mann@RWMann.com > URL http://www.RWMann.com/
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