1986 Mercedes Benz 190d tachometer not working

1986 MERCEDES BENZ 190D
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FELLAH1967
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1986 Mercedes Benz 190d Two Wheel Drive Automatic 250000 miles

i have a 1986 mercedes 190d non turbo 2.5 liter , the tachometer stoped running , checked the wires running into it ,and change tachometer ,still inop...what should i do to pinpoint the origin of this problem ?
Oct 4, 2009 at 4:30 PM
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DR LOOT
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if you look at the front of the engine down by the harmonic balancer, you will notice a round pick up sensor. That is operates your tachometer.
Nov 27, 2009 at 9:02 AM
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