Re: Tachometer not playing ball - TMD22
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It could be your 12 volt alternator....the tach gets its signal from the Alternator. Sounds like the alternator is NOT exciting. Probable cause is a faulty relay or loose wire to the relay.
On Tue, Oct 15, 2019 at 4:51 AM David Cummane via Groups.Io <firstname.lastname@example.org> wrote:
The needle on the tacho for my Volvo Penta TMD22 goes to the far side of the dial on turning the key but does not return to zero/rev count.