czntiger6
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| posted on 21/5/07 at 08:20 PM |
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Tacho on 4AGE
I run a 4AGE silvertop and have "strange" behaviour on my tacho. I am not using the aux wire for the tacho as that is being used for other
purposes and have the tacho wired to the coilpack. The results I get on the tacho are when running idle show "dancing" between 800 and
2000 revs.
Can anyone help me with this?
Thanks...
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czntiger6
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| posted on 22/5/07 at 07:01 AM |
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extra info, i am using an OMEX 500 ECU...
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thomas4age
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| posted on 23/5/07 at 02:34 AM |
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That's probably interference from the energized coils into the wire that feeds the tacho it's signal.
You can try to put a coaxial cable between the tacho and the coilpack.
you could take a good/ish type of of microphone wire or even headphones wire for that. connect the shield to the tacho's earth (only connect 1
side of the shield NEVER both because of earth loop)
and the inside wire to the signal ends of the coilpack and the tacho itself.
if that doesn't do the trick your tacho might be broken, or it's signal wire might need capping of with a few picofarad to balance the low
rpm signal (like in old car radio's)
grtz Thomas
If Lucas made guns, Wars wouldn't start either.
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