On Feb 12, 3:46=A0pm, Chip <chip.w...@[EMAIL PROTECTED]
> wrote:
> David wrote:
> > After not being driven in over one month, I took my 82 380SL for some
> > exercise. When I started the car, I heard a strange knocking sound
> > that seemed to be from under the hood. I switched it off and checked
> > around, but could not see anything unusual, so I tried starting again.
> > When I got in the car, I noticed that the tach was on 1800 RPM. It
> > started and ran fine, with no unusual noises or behavior. I did see
> > the tach move above 1800 briefly, but after an up****ft it just fell
> > back to 1800 and stayed there.
>
> > I also have had a jumping fuel gauge for a long time, so I'm willing
> > to spend some effort to remove the cluster if it is the gauge itself.
> > Before I do, can someone tell me if the tach is driven off of the
> > flywheel in this model, or is there some kind of amplifier under the
> > hood that I need to check out, or perhaps there is a fuse?
>
> > Thanks for any advice.
>
> > David
>
> I am far from an expert, but I have had my '81 380 SL instrument panel
> off. =A0It is super easy to remove- pull steering wheel (super easy w/
> single center bolt) and pull the panel gently toward you. =A0Enough
leeway=
> on the cables to lay it down on the steering column. =A0Maybe 10 min job
> the 1st time, easy 5 min after that. =A0Very logical (German design,
nicht=
> vahr?) and everything is self-evident. =A0All?? connections are
electrical=
> except oil pressure. All seemed very familiar from my early days as self
> taught cheap fixer of old cars to keep them running.
>
> Chip
Thanks for the information, Chip. A long time ago, I rebuilt a
flathead V8 in a 1951 Mercury, but I had a manual and a teacher to
keep me from screwing up. I found some other posts about tachs on
diesels from about the same era, so I think I have enough information
to start tinkering on the next nice day.
Thanks again,
David
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