[alfa] GTV6 speedo problems

[Pottree@xxxxxxx]

A couple of recent inquiries about GTV6 speedo problem (what could be the  
problem?  They either work, don't work, or read wrong, right?).
 
After X period of time and history goes by, electronic problems happen in  
the GTV6 speedo and it needs to be sent to a good speedo shop; when this  
happened on my 84 car a couple of years ago, it went up to Palo Alto, I think,  so 
the questioner (sorry I don't recall your name) in the Bay area doesn't have  
far to go.  As I recall, the failure mode on mine was this: it worked well  for 
many years.  Then, the needle started jumping at speeds between about  45 and 
55 mph, bouncing up to 90 or 100 or so.  Then, readings were not  accurate.  
Then, reading were only a little bounce between an indicated 15  or so and 
around 30, no matter the actual speed.  After a nice long rest at  speedo heaven 
where a transistor was found to have failed and a new one  installed, it has 
come back and worked perfectly ever since.
 
Moral: send it out or use the tach.
 
Charlie
LA, CA, USA
 
84 GTV6
91 Spider Deminormale
94 164 LS
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