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  #1  
Old 08-24-2010, 02:36 AM
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'83 Turbo Diesel 300D shift issue

Guys,

I have looked through the archives and cannot find the answer to my specific problem (one of them, anyway...)

When I start out in car (plugs ok, starts right up, idles well) the transmission acts up, especially if I try to go uphill. Surges and strains, not cool. After 5 or 10 minutes driving it smooths out and starts shifting better.

Other issue is very minor oil drip that turns into a gusher when parked in my steep driveway.

If anybody has encountered this, especially the shifting situation, I would like your feedback. Mahalo (thanks)

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  #2  
Old 08-24-2010, 08:21 AM
toomany MBZ's Avatar
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When was the last time you changed the filter and fluid?
Is there the proper amount of fluid in it?
Things get a bit better once the fluid is warmed up. You have a leak too, try and determine just where.
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  #3  
Old 08-24-2010, 08:46 AM
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Fluid leaks are never good news especially when they are gushers! Fix the leak put in the correct amount of fluid and then see if you have the same problem.
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1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
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  #4  
Old 08-24-2010, 10:29 PM
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As for the surge and strain when going up a hill, I think I have a clue (because my 300D sometimes does it). Several years ago I adjusted the vacuum control valve on my car and greatly improved this problem. Although I don't recall the particulars of how this worked (had a little better concept when I worked on it than I do now), it is my opinion that the vacuum reaches a point when accelerating up a hill that it cannot quite decide whether to be in 3rd gear or 4th. Sort of halfheartedly tries to shift, resulting in a 3-4 flare. In the rare event that this happens, I floor the accelerator and egage the kickdown switch. Transmission shifts down to third and all is well. Prior to adjusting the vacuum control valve, I couldn't even engage the kickdown switch. As stated above, my adjustments helped a lot, but are not 100%. Rather than continue adjusting and adjusting, I learned to live with it. Later bought a 300 SD and got it right the first time I adjusted it. I may be off base on this one, but if so maybe some brighter member can chime in.
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  #5  
Old 09-06-2010, 11:49 PM
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ya i had the same problem w/ mine since its vacuum shift i took mine to a local trans shop and they did a smoke test on all the lines and hoses and there were alot of little leaks after replacing them my cars suns great

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