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85 300D - Tach reading too high
I just finished up an OM617 engine swap from a W126 to a W123 chassis. Long story short, I used the tach wire from the W126 engine that was attached to the engine, and connected it to the W123 car. I'm getting high reading on the tach. Should I use a tach amp off a W126 to correct this?
Here's what I'm seeing for the speed and tach. The trans is shifting to 4th, and feels fine. And I can tell the engine isn't over-revving, so it has to have something to do with the swap between the two chassis.
Any ideas?
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1987 300SDL #1, 1987 300SDL #2, 1980 240D, 1982 300SD, 1994 S350, 1990 350SDL, 1991 350SD, 1985 300D, 2005 E320CDI
Gone, but not forgotten: 1981 300SD, 1982 300SD, 1987 300SDL, 1983 300TD, 1980 300CD, 1981 300SD #2, 1987 300D, 1987 300TDT, 1980 300D
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