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
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