Re: [DML] Why would the Speedo jump 10mph at 45'ish mph ?????

[PAUL LEGUTKI <legutki@xxxxxxxxxxxxx>]

The nylon dust cap at the driver's front wheel might
be loose or worn and the speedo cable itself might
need to be lubricated.
--- Nick Kemp <nkemp@xxxxxxxx> wrote:

> At about 45 mph, the speed jumps about 10 mph over
> actual and stays there.
> The speed reading also tends to be more jumpy over
> 45.  This does not make
> sense to me.  Going slower makes sense given how
> speedos work, going faster
> does not.  On a couple occasions, I've put a drill
> on the cable and it does
> not seem to exhibit the problem.  It is as if having
> the car running has
> something to do with it... but that does not make
> sense either (short of
> collapsing the speedos magnetic field which I have
> no explanation why that
> would happen).
>  
> The yellow hub, angle and front speedo cable are
> new.   I currently have the
> lambda unit disconnected from the front firewall (is
> that term logical with
> a rear engine car?) since it seemed to be aggravated
> by shifting.  But it
> does not seem to have affected the problem  I've had
> the car and this
> problem for many years and recently I've decided it
> is time to figure it
> out.  
>  
> My next thought is the head unit.  I hesitate to
> pull the binnacle nor to
> replace parts only to find that it didn't solve the
> problem.
>  
> As expressed before, the D's speedo is not a strong
> point!
>  
> Thoughts will be appreciated?
>  
> Nick
> 
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> 2:42 PM
>  
> 
> 
> [Non-text portions of this message have been
> removed]
> 
> 



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