Re: [alfa] help fixing late 3 series spider speedo

["Dean W. Cains" <dwc@xxxxxx>]

Hi Dan:

I've been inside my '87 speedo a number of times, and never had any 
success.  Mine is very smooth and steady, but reads about 60% low.  I'm 
certain it's not a cable or sender issue, as the odometer is dead 
accurate.  On a drive from Miami to Tampa, Mapquest said 312 miles, and the 
odo clocked 314.  There is a small adjustment pot I've played with, and 
really couldn't tell any difference.  I have corresponded with several 
others who have sent their speedo's off to Palo Alto Speedometer, and only 
one ended up being repaired to the point of actually working.  I've also 
re-soldered all the joints on the circuit boards and cleaned all the cable 
connectors.  The only thing I haven't checked out is that I heard Peter 
Krause knows something about replacing a chip on one of the circuit 
boards.  Please let me know if you come across anything new.

Regards,

Dean


At 01:55 PM 10/29/2003, you wrote:

> Date: Wed, 29 Oct 2003 11:02:17 -0600
> From: "Dan Hagrman" <dan@domain.elided>
> Subject: [alfa] help fixing late 3 series spider speedo
>
> Hi all,
> I'm looking for any wisdom before I dig into my speedo.  It "works" but 
> registers ~20 mph at 65mph, ~28 mph at ~90 mph.  I've checked and cleaned 
> the tranny cable, looks & turns fine.  The fact that the odo appears 
> accurate tells me this problem is in the gauge itself, right?  Does anyone 
> have a spare instrument cluster they would be willing to sell or loan to 
> me?  (working or non-working speedo, I will pay fair price)  Anyone know 
> offhand what the cable rotation speed is relative to axles?
> thanks in advance for any help.  I've put off fixing this thing too long, 
> and/or fixed everything else, so it's time to tackle it.  I'd rather 
> figure it out than ship it somewhere.
> dan in kc, 89 spider, home of the now complete perpetual engine rebuild
--
to be removed from alfa, see /bin/digest-subs.cgi
or email "unsubscribe alfa" to majordomo@domain.elided