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

["welmoedj" <joe.dalton@xxxxxxxxxx>]

Sometime ago I had similar problems with the speedometer.
Turned out that a piece of plastic cover at the back of the odometer 
(between odometer and speedometer spring) had at times contact with 
the spring thus causing a delay in the needles' advancing.

Could be your problem too (old plastic changing due to age and 
temperatures)?



--- In dmcnews@xxxxxxxxxxxxxxx, "Nick Kemp" <nkemp@...> 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
> 
> No virus found in this outgoing message.
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> Version: 7.5.476 / Virus Database: 269.11.4/936 - Release Date: 
8/4/2007
> 2:42 PM
>  
> 
> 
> [Non-text portions of this message have been removed]
>




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