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mrbarista
tacho problem
#1
Home away from home
Joined:
2012/11/16 10:46
From Port Douglas. QLD
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Posts: 377
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hey eveyone,

heres the problem.

In neutaral the vdo tacho works perfectly, but once driving after say 2000-3000 revs
its stutters, climbing and falling with a jerky motion.
checked wiring and searched on here with no luck

engine is l20b with electric dizzu.
cheers

Posted on: 2013/3/24 10:19
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ca18det
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LittleFireyOne
Re: tacho problem
#2
No life (a.k.a. DattoMaster)
Joined:
2005/8/27 15:36
From Townsville, Qld
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Check earthing points, check voltage regulator sect. I've never found it an annoying issue I just accept that's what it does

Posted on: 2013/3/24 22:27
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lamb_daiquiri
Re: tacho problem
#3
No life (a.k.a. DattoMaster)
Joined:
2009/4/30 7:57
From Adelaide
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Also check the ignition condenser (capacitor) if fitted.

I had an issue like this that I never resolved in an old car. It's noise in the ignition circuit so if you can fix that it'll go away. A friend with an oscilloscope might be able to help if the other checks don't fix it.

Posted on: 2013/3/24 23:42
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datsa73
Re: tacho problem
#4
No life (a.k.a. DattoMaster)
Joined:
2000/1/10 8:43
From Snohomish, WA USA
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Posts: 1280
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Pull the leads of the capacitor by the coil and fit a flat fuse to them. See if that fixes your problem. If so, leave it that way.

Posted on: 2013/3/25 4:22
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