BenzWorld Junior Member
Date registered: Nov 2010
Vehicle: 1987 Mercedes 300D Turbo
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The engine was running fine when the tach was working, but when it intermittantly stopped the engine would run slightly rough, now its stuck in this mode with no tach. Its the SAME thing that happens when you turn the key back slowly while turining the eninge off. Im convinced that something disturbed when the oil was changed and or the engine bay wash pressure washed.