Thread: OM617 W123 Glow plug power source? (low voltage at relay)
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  #4  
Old 12-10-2014, 06:19 PM
SD Blue SD Blue is offline
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Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,186
Ditto, checking the ground strap, especially the Chassis-Engine. It may require physical removal and cleaning.

Dropping to 9Vdc is too low. It should only drop to ~11Vdc.
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84 300SD 350K+ miles ( Blue Belle )
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