Question about 1983 Mercedes-Benz Mercedes Benz S Class

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Have a 1985 Mercedes 300D. Transmission fluid line rubbed against engine and created a hole. 2 1/2 quarts of fluid leaked out. Fixed the line. Put in fresh Dexron iii/m. Container said also suitable for Mercon transmissions. Took around the block worked fine. Next day all it would do is shift when the speedometer needle reached the dots on speedometer face (in other words high rpms). I believe vacuum plays a role in the shifting and I have at least 15 inches. Did I use the wrong fluid which in turn stuck something in the tranny? Thanks

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Unless you observed the utmost in cleanliness when repairing the line and addling fluid, you may have gotten some junk in the tranny. The smallest impurity in transmission fluid can cause operational difficulties. If your lucky (and clean) you may have simply under or overfilled the trans. This can cause the shift points to change dramatically. Check the fluid level again. If you're not sure how to properly check the trans. fluid: park on a very level surface night before checking level, next morning depress parking brake and allow engine to run for 2-3 minutes before checking. Use a clean lint free rag to check level on the dipstick. If you are over full, drain some fluid off until you get it right, obviously if you are still low, add some more. Dextron-Mercon is a suitable trans. fluid for your car.

Posted on Aug 13, 2010


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