My wife's TD's tranny is acting up. This has happened in the past, but cleared up on it's own. Now it is doing it again. I am suspecting a vaccuum problem but I'll take any advice. She is shifting real late and it won't go into 4 gear. I checked the tranny fluid and it is fine. Any ideas?

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member