Thread: Tach Issues
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Old 6th July 2012, 11:58 PM   #3 (permalink)
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Dimi
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Australia
 
Join Date: May 2006
Location: Seaforth,Sydney
GT40: DRB 68 & 109
Posts: 591
Re: Tach Issues

Hi All

In a lot of instances if you have a multi spark ignition system the tacho gets confused by the multiple sparks and shuts down as the revs pick up.

When I first connected my tacho it read fine at idle but as soon as the revs got up above 1500 it would stop reading.

I had to use an adaptor which piggy backed off the crank sensor on my 5.4 modular motor to get a stable pulse the tacho could read.

Dimi.
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