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Location:
Perth
Registered:
May 2003
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 Dodgy Tacho
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Mon, 14 July 2003 07:31
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I have bought 2 tachos from marlows each at $100 i bought one like 10 months ago and as i was rebuilding my car\engine i didnt know it was fkd till i started it, so i went there asked the dude
he says ohh they're very sensitive you have to hook them up right
bla bla bla, so i bought another one my brother hooked it up (hes a mechanic so he knows his shit) he hooked it all up right
so i started it up it gets a feed from it (the coil) but its jumping all over the show i dont think it is the slighetest bit accurate.
For you auto sparkies its hooked up to a constant power, earth, lights, and his hooked up to the coil. (4 wires)
should i cut my loses and get a new one (i'll be abusing the guys at marlows) any suggestions (3 1/4 inch tacho)
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Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
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Re: Dodgy Tacho
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Mon, 14 July 2003 07:38
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a jumping tach generally indicates a bad earth.
if it weer dodgy it would just read a fedw thousand rpm out.. or not work at all
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Location:
brisbane
Registered:
March 2003
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Re: Dodgy Tacho
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Mon, 14 July 2003 10:01
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change the condencer on the dizzy and go from there if the condencer is fucked the tacho will jump around the place
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Location:
Gold Coast
Registered:
January 2003
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Re: Dodgy Tacho
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Mon, 14 July 2003 11:18
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what vehicle is it fitted to ?(engine)
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Location:
Perth
Registered:
May 2003
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Re: Dodgy Tacho
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Tue, 15 July 2003 00:32
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toyota corna mark2 76
4m 6cyl its got a resistor in the coil if that makes a differnce.
i'll try the condesor.
anything else?
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Location:
Darwin
Registered:
April 2003
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Re: Dodgy Tacho
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Tue, 15 July 2003 01:44
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A bad earth you reckon, eh?
That could be the problem I have with my tacho.
The condenser, the points and rotor were all replaced and that seemed to make a bit of a difference.
I'm going to check the earth wire and see how it goes.
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