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Old 01-17-2022, 07:00 PM
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JHZR2 JHZR2 is offline
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Join Date: Jan 2002
Location: New Jersey
Posts: 4,906
Perhaps it is better to call it an overshoot. Is the w140 drive by wire? I believe my father’s w210 was, but it had a 606 engine.

You can see a few things on this cold start. It starts at about the right RPM (~750-850), but after any user interaction, it settles too low (~550). That final throttle blip is the best example. I gave it a little pedal and it kept going to over 3000. Once the engine is warmer it doesn’t seem to do this.

What in there might be sluggish?

The engine is very clean, and I lubed the throttle points I could.

Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
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