On the pegged out tach -
I'd be interested in the answer to this too. My 71BGT does this every once
in a while - in fact, its been happening for several years. When it happens
(maybe once a week?) when I first turn the ignition switch and before
engaging the starter, I usually turn the ignition off and back on and all
is normal.
Another curious and possibly related problem is that the tach is more
likely to do this and will also become more unstable (fluctuate, read high
by 1000 rpms) during the summer when the interior gets hot.
But like I said, I've ignored it for a number of years and the tach is
still pretty reliable most of the time.
David
67 BGT
71 BGT
>
>
>Just recovered the dash in my '70 BGT and reinstalled the gauges.
>Everything works fine with the exception of the tach. Now when I turn
>the key to the run position the tach jumps to redline and stays there
>until I engage the starter circuit, after which it works fine. (I don't
>believe this is 'sposed to happen, but then, it is an MG ;>). This is a
>simple hook-up with keyed connectors so I KNOW the leads to the tach
>aren't reversed. My knowledge of the functioning of electrical tachs is
>zilch. Anybody care to take a stab?
>
>The mechanical tachs in my Triumphs work fine. (obligatory Triumph
>content)
>
>Lonn Howard
>'70 TR6 -mine
>'71 TR6 -in my garage
>'70 MGB GT -ours
>'89 Saab Turbo Convertible -hers
>
>"We are but temporary custodians with an obligation of preservation."
>
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