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. It is super easy to remove- pull steering wheel (super easy w/
single center bolt) and pull the panel gently toward you. Enough leeway
on the cables to lay it down on the steering column. Maybe 10 min job
the 1st time, easy 5 min after that. Very logical (German design, nicht
vahr?) and everything is self-evident. All?? 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
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