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Speedometer malfunctions

Tiny
EZIKYEL
  • MEMBER
  • 1982 MERCEDES BENZ 300SD
  • 164,000 MILES
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?
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Tuesday, January 17th, 2012 AT 3:55 AM

1 Reply

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
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.
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Tuesday, January 17th, 2012 AT 4:07 AM

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