My 300d will not fully engage into overdrive? It sometimes will partially engage but as soon as I give it a little pedal it begins to slip. Any suggestions?

No overdrive, just 4th gear. If the tranny fluid is at the correct level, I'd guess the tranny is wearing out -- they tend to fail most often by refusing to shift up no matter how fast you go.

Have a transmission specialist look at it, but if it's slipping in 4th, it's time of a rebuilt one.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

At the suggestion of another on this forum I put some trans-x in the transmission today and whoa!! It smoothed out the shifting and now engages fully into 4th gear. I wouldnt have believed it as I am often skeptical of pour-in additives like that. Best $6 I have spent.

leathermang, is that you? Advising people in private now, huh?

Another satisfied Trans-X customer!

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

Ok,,, I guess I am busted....