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Old 11 Dec 2007, 12:51 pm
Gene Wagenbreth
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Default 90 honda accord erratic tach

90 honda accord

driving to work this morning and for 3 or 4 seconds the tach jumped
up and down erratically. Never happened before. Only happened once.
Engine ran fine while tach was jumping. No other sysmptoms. Speedometer
seemed fine.

G
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Old 11 Dec 2007, 02:47 pm
Tegger
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Default Re: 90 honda accord erratic tach

Gene Wagenbreth <genewxxx@isi-OS4> wrote in news:fjmilr$o0v@venera.isi.edu:

> 90 honda accord
>
> driving to work this morning and for 3 or 4 seconds the tach jumped
> up and down erratically. Never happened before. Only happened once.
> Engine ran fine while tach was jumping. No other sysmptoms. Speedometer
> seemed fine.
>
>
>



Either:
2) Your igniter is failing. Replace it before you get stranded. Or,
2) the tach signal wire (blue wire) connector in the distributor is
corroded and making intermittent contact.

--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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  #3 (permalink)  
Old 12 Dec 2007, 01:20 am
jim beam
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Default Re: 90 honda accord erratic tach

Gene Wagenbreth wrote:
> 90 honda accord
>
> driving to work this morning and for 3 or 4 seconds the tach jumped
> up and down erratically. Never happened before. Only happened once.
> Engine ran fine while tach was jumping. No other sysmptoms. Speedometer
> seemed fine.
>
> G


to add to what tegger says, it could also be a defective tach. my 90
crx had one. symptoms exactly as you describe. if you get a
replacement from a junkyard, it's about a 10 minute job to put it in.
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