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| Registered Join Date: May 2004 
					Posts: 6
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				Speedo Problem Need Help!
			 
			I just finished changing out the gear to fix my odometer, the speedo was working prior. When I start up the car the speedo shoots up to 150 and stays there. Any idea what would cause this? It is a VDO gauge from 1983 911sc. Any suggestions would be appreciated. Thanks, Gerard | ||
|  05-21-2004, 07:22 PM | 
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| Banned but not out, yet.. | 
			Take it apart again and double check everything
		 
				__________________ An air cooled refrigerator. ‘Mein Teil’ | ||
|  05-21-2004, 08:51 PM | 
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| Registered Join Date: Apr 2003 Location: Orange County, California 
					Posts: 337
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			And this must be why 911's look fast, even when still!     
				__________________ Mike 83 SC | ||
|  05-21-2004, 09:47 PM | 
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| Registered | 
			I suspect you have swapped the sensor wire with another on the back of the gauge.
		 
				__________________ 74 Targa 3.0, 89 Carrera, 04 Cayenne Turbo http://www.pelicanparts.com/gallery/fintstone/ "The problem with socialism is that you eventually run out of other people's money" Some are born free. Some have freedom thrust upon them. Others simply surrender | ||
|  05-21-2004, 11:04 PM | 
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| Registered Join Date: May 2004 
					Posts: 6
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			When I took it apart I made a connection diagram. Kind of hard to mess up that way but just in case. There are ony three wires to connect: power to + ground to - and sensor wire goes beside the ground terminal, I dont't remember the gauge marking off hand. This does leave one connector on the guage with nothing attached to it. The gauge is electronic. Any more suggestions? Does the bentley repair manual cover guage troubleshooting? /Gerard | ||
|  05-22-2004, 04:02 AM | 
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| Registered | 
			From an earlier thread: Quote: 
 
				__________________ 74 Targa 3.0, 89 Carrera, 04 Cayenne Turbo http://www.pelicanparts.com/gallery/fintstone/ "The problem with socialism is that you eventually run out of other people's money" Some are born free. Some have freedom thrust upon them. Others simply surrender | ||
|  05-22-2004, 09:06 AM | 
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| Registered Join Date: May 2004 
					Posts: 6
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			Well the the saga continues. I found a trace on the board that was lifted and broken so I ran a jumper. It also looks like I have a blown resistor and this is where I need some help. I need the value of the resistor that is closest to the 12V lead wire on the speedo pcb. The colors are gold / something / something / orange. Does anyone know what this is supposed to be? Thanks, /Gerard | ||
|  06-06-2004, 01:08 PM | 
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| Registered Join Date: May 2003 Location: Manhattan Beach, CA 
					Posts: 2,350
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			Send to Pelican. They have suppliers that can repair it and calibrate it. Why risk damaging it further? 
				__________________ Have Fun Loren Systems Consulting Automotive Electronics '88 911 3.2 '04 GSXR1000 '01 Ducati 996 '03 BMW BCR - Gone | ||
|  06-06-2004, 01:24 PM | 
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