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Old 08 Jul 2008, 12:41 pm
z
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Default lazy tach

1992 honda civic ex
all of a sudden, the tach reads zero at idle. works fine above idle.
now what?
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Old 08 Jul 2008, 09:02 pm
jim beam
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Default Re: lazy tach

z wrote:
> 1992 honda civic ex
> all of a sudden, the tach reads zero at idle. works fine above idle.
> now what?


if a thump on the dash fixes it temporarily,

#1, remove and check interface connections.
#2, check other wiring loom connections like where they connect to the body.

if that doesn't work, replace tech with a donor from a junkyard. i had
a bad one on my crx, so i know they go bad sometimes.

other possibility is a failing igniter, but you'd probably have other
symptoms by now.
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Old 21 Jul 2008, 02:59 pm
z
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Default Re: lazy tach

On Jul 8, 10:02*pm, jim beam <spamvor...@bad.example.net> wrote:
> z wrote:
> > 1992 honda civic ex
> > all of a sudden, the tach reads zero at idle. works fine above idle.
> > now what?

>
> if a thump on the dash fixes it temporarily,
>
> #1, remove and check interface connections.
> #2, check other wiring loom connections like where they connect to the body.
>
> if that doesn't work, replace tech with a donor from a junkyard. *i had
> a bad one on my crx, so i know they go bad sometimes.
>
> other possibility is a failing igniter, but you'd probably have other
> symptoms by now.


now it's better, but I don't trust it....
i keep thinking "leaky capacitors" and such.
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