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#1
06-30-2011, 08:58 AM
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560 SEL - intermittent speedo...
Hi All,
I have mentioned this before, but now I really do want to tackle this. My speedo on our 1989 560SEL is intermittent. It stays on zero, and then all of the sudden jumps to life and works normally. I.e. I start the car, drive around, and ever so often it would just read zero. Then I accelerate, and wham!, it comes to life. Meanwhile the odometer works perfectly, so I know its not the signal from the cable. Possibly a bad ground for the Speedo itself?
__________________
Henry Bofinger 1989 560 SEL (black/black) 2001 Audi TT Roadster (silver/grey) 
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#2
06-30-2011, 12:23 PM
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Sounds more like the motor that drives the speedo. INTERNAL fault, most likely requires repair OR replacement.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
06-30-2011, 12:43 PM
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Quote:
__________________
Henry Bofinger 1989 560 SEL (black/black) 2001 Audi TT Roadster (silver/grey)
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#4
06-30-2011, 02:19 PM
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OK I just took it apart and redid some solder joints. Put it back into the car, and I know I did not break anything, because it worked. The question now is if it will hold up, since the problem is intermittent.
__________________
Henry Bofinger 1989 560 SEL (black/black) 2001 Audi TT Roadster (silver/grey)
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