Moorron
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| posted on 23/3/11 at 08:25 PM |
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tacho not working
Evening lads.
I think ive asked this before but im still having troubles and have some more info.
My Smiths motorsport tacho doesnt work. Ive had it running for the last year but it seems to switch off for a second when im over 7000rpm, it happens
randomly and at different revs. Its revieving the signal straight from the ZX12 ecu which is also feeding another smalled digital tacho which works
fine.
Tonight i took the back off the dash to see if the wiring is ok and it is, but i noticed the tacho input was for a coil ignition (last engine was old
and on carbs), looking on the net shows that this is the problem, the tacho cant keep up with the signal input type as ive got it on the wrong wire.
So ive changed the input to the correct wire for efi signals but when i do this i get no reading what so ever.
Not sure what to do now other than buying a replacement at £200+
Any tips?
its this one:
http://www.caigauge.com/page11.html
[Edited on 23/3/11 by Moorron]
Sorry about my spelling, im an engineer and only work in numbers.
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snapper
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| posted on 23/3/11 at 08:33 PM |
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Have a look at driving directly of the coil pack using 3 diodes, wiring diagram on the Megajolt site.
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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Moorron
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| posted on 24/3/11 at 08:48 PM |
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its a good idea but i hate running extra wiring that should really work with the one in the car. I could test the tacho on another car, with a efi
signal to see if the tacho will read it. If it doesnt then i know the tacho efi input is broke and it will need repairing or replacing.
If it work then im stuffed lol
cheers anyway
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