Mad Rev Counter

[Ian Hunter]

Just before I order a new one, I thought I had better check.

We were driving through France and I noticed I was doing 6,000 rpm, then 7,000 rpm, then 8,000 rpm - all at a steady 80mph on fifth. Next thing I know it kept going round, past 0 and back to 2,500 or so!

Since when, it has just been all over the place, so I am not really sure what's going on. Sometimes steady and presumably accurate, next minute off the scale again.

Bin it?

Ian

[trichardson]

Is it a mechanical or electrical gage?

[Ian Hunter]

Sorry, an electrical Autometer gauge, Vintage look - standard FFR issue!

Ian

[trichardson]

Does your tach gets it's signal from the coil or from a designated output on your ignition box. I remember reading somewhere that it's OK to connect it to the coil if you don't have a high powered ignition box but most people do in these cars. I don't know what would happen if you did connect it to the coil under those circumstances, though. I'd try re-calibrating it and if that doesn't work go for a warranty replacement. I'm guessing you'll have to replace it since it seems to work sometimes and not others.

[Ian Hunter]

The rev counter is connected to the coil. The distributor is a conventional Mallory unit with an electronic something where the points should be, so not full electronic igntion and no box anywhere.

The instruments is a few years old now, so no hope of Warranty!

I'll just order a new one!

Thanks for trying.

Ian

[trichardson]

Yeah, sorry. It was worth a shot.