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Own:1980 300D w123(turbo adapted),1988 w201 190D, mercedes 220 1960; Owned: 1970(german) 240D.
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45 Posts
Discussion Starter #1
Hi there,
after some weeks of adjusting the vacuum supply and the modulator of the trans. finally fixed and got a nice and clean shifts on the 4 gears without slips or flares. :D

BUT!!! after 15 mins. of driving the problems begins. It doesn't shift down after a red light, the car is stock on 3th gear, I have to put it on L to start moving, and the slips problems starts again....

So im thinking that the cooling system of the trans is clugged or something. the average temp of the car is 80-90 c. Any ideas on how to check if this is really going on? have flushed the radiator and no good results.
 

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1981 W123 300D non turbo, 1992 190E 1.8 <=> 2.0
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6,561 Posts
It is stuck in third but the engine doesn't stall or try to stall? What's the engine doing at a standstill is it bogged down?
 

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Registered
Own:1980 300D w123(turbo adapted),1988 w201 190D, mercedes 220 1960; Owned: 1970(german) 240D.
Joined
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45 Posts
Discussion Starter #3
the engine is kind of stock too, I have to floor the pedal to get response. But while driving I got slips on shifts and the engine revs like crazy until I loose a little the gas pedal and then it makes the shift.
 

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1981 W123 300D non turbo, 1992 190E 1.8 <=> 2.0
Joined
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6,561 Posts
If you are absolutely sure that the vacuum system is working correctly and that the shifter bushings aren't play games with you and you've got clean fluid and filter etc then I reckon you need to start making fluid pressure measurements.

You do realise that the performance of the transmission will be influenced by poor performance of the engine don't you?
 

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Registered
Own:1980 300D w123(turbo adapted),1988 w201 190D, mercedes 220 1960; Owned: 1970(german) 240D.
Joined
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45 Posts
Discussion Starter #5 (Edited)
I'm sure the vacuum system, engine, injection, fluids and filters are perfect, not sure about the bushings. how can I check/replace them? I think they are faulty because, when parking the car and set the trans on "P" the car moves a little until I hear a noise and then it stops.
 

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1981 W123 300D non turbo, 1992 190E 1.8 <=> 2.0
Joined
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6,561 Posts
There's quite often a bit of movement if you put it in park and don't apply the parking brake...

If I were you I'd start with a visual inspection fo the shifter bushings - crawl under the car and look to see if they are falling apart or gone!
 
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