300e Transmission Problem
 

Hello everyone, I just purchased my second E (Black 1986 300E) at the local auction for $250 and the car looks great inside and out!! The car started right away after sitting for about two years. When the engine reached operating temperature I checked the tranny fluid and it was non existent (I added 5 qt of fluid). After adding the fluid the tranny engages in reverse and first gear (second sometimes) however it does not shift into third or fourth. After driving for a few miles I checked the tranny fluid again and it mixed with the old stuff and the fluid is now brown color. I would like to know whether flushing the tranny and changing the filter would help or should I start looking for a used tranny (if any of you have one I might seriously consider it). If any of you were in similar situation or could help me I would greatly appreciate it.

Igor Zeljic, Minneapolis.

I think the answer is in your question:

See "whether flushing the tranny and changing the filter would help ... " and if not "start looking for a used tranny ..."

Be sure to empty the torque converter as well. Check the vacuum connections to the vacuum modulator on the side of the trans.

Hope this helps,

Haasman

Haasman, thanks for your reply. Are the vacuum lines visible without removing any covers? What should I look for?

Thanks again, Igor.

Yes, what you will be looking for is the line that goes from the engine down to the transmission. Often these hard platic lines get cracked or disconnected. This line connects to the vacuum modulator via a simple rubber tube. These also get hard, brittle look good but actually leak.

My guess from your description is the trans will probably work pretty well if you get out ALL the ATF, thus the suggestion for the torque converter. DEFINITLEY replace the trans filter with ONLY a MBZ filter.

Let us know how it goes. I hope you scored and you fall in love with your car. I'm rooting for you.

Haasman