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

 

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.

 

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.