[Mgs] fuel gauge and temp

[Monte/Jane Morris]

Thanks guys.
I just remembered that the turn signals also failed the other day and I
"jiggled" the #2 fuse and they started working again.
Monte


On 9/24/08, Paul Hunt <paul.hunt1 at blueyonder.co.uk> wrote:
>
>  The Smiths electric temp and fuel gauges *do* rise and fall all the time,
> although usually too small to notice unless you look very closely.  If this
> were all that were happening I'd say the instrument voltage stabiliser was
> on the way out.  But presumably the radio isn't fed from that circuit or it
> would always have gone on and off!  In that case it has to be the feed to
> the radio and stabiliser that is failing, not the stabiliser itself.  But
> the other question is also over the radio, that *should* be connected to a
> different circuit altogether - the accessories circuit, which comes on
> before the ignition. If it were the fuse the tach would also be going on and
> off, and all the other fused ignition circuits like indicators, brake
> lights, wipers, heater fan etc.  That leaves a loose connection somewhere
> between the fusebox and the radio and stabiliser.  The stabiliser is the
> last point in a part daisy-chain and part tree-and-branch structure.  Before
> that is a branch to the tach and indicators, and before that the feed to the
> wiper switch and so on.  So if the tach isn't going on and off as well I'm
> tempted to think the problem *is* with the stabiliser, or its connections.
> If the radio really is going on and off with the temp and fuel gauge then
> maybe it is picking up its power from the green at the stabiliser, in which
> case the problem is at that connection or the one feeding it from the branch
> to the tach and indicators, which is a very difficult to get at multi-way
> plug behind the dash.
>
> PaulH.
>
> ----- Original Message -----
>
>
>
> Went for a 300 mile drive the other day (79B) and noticed the temp and fuel
> gauge were both  rising and falling simultaneously (and the radio was
> working periodically).