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#1
09-27-2006, 11:02 PM
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Speedometer adjustment
My 1978 300CD just had a new speedo cable put on, but it appears to about 5% off. If I am driving 70, the speedometer reads about 78. Is there any way to adjust this?
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#2
09-28-2006, 12:53 AM
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5% would be 73.5 mph, you are at ~10.3% off.
You might check and see if the tires and rims are stock or if they have been changed in the last 28 years? Speedos in that era are typically problematic. My 85 wobbles so much I usually couldnt tell you exactly how fast I am going.
__________________
Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.)
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#3
09-28-2006, 08:05 AM
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A good VDO repair shop can calibrate that speedo, but why spend $100+ ?? for such a small % problem?
__________________
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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#4
09-28-2006, 10:24 AM
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Think of the savings!
Think of how much you'll save in speeding tickets. If you drive like most of us do, you'll always be pushing the limits anyway. This way you have a margin of safety. See, there's a silver lining in every cloud.
Anything else I can do for you? 
__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century  OBK #55 1998 Lincoln Continental - Sold Max 1984 300TD 285,000 miles - Sold The Dee8gonator 1987 560SEC 196,000 miles - Sold Orgasmatron - 2006 CLS500 90,000 miles 2002 C320 Wagon 122,000 miles 2016 AMG GTS 12,000 miles
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