speedometer malfunctions

1982 MERCEDES BENZ 300SD
164,000 MILES
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EZIKYEL
  • MEMBER
  • 1 POST
The speedometer on my 82' 300sd shows the wrong speed most of the time.
When car is at stop it points on about 30mph, I noticed it shows some speed (about 25-30 mph) when ignition is turned on, even before engine starts. Thee is no cables going to instrument cluster, just a wire.
How to fix?
Jan 17, 2012 at 3:55 AM
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RIVERMIKERAT
  • ✓ASE Certified Mechanic
  • 6,110 POSTS
  • ASE Certified Mechanic
Our reference material doesn't have any information for your vehicle. Your speedometer needs to be calibrated. This may be possible by simply turning a screw, or it may be something that can only be done at a shop.
Jan 17, 2012 at 4:07 AM
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