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  #1  
Old 05-26-2014, 01:43 PM
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1995 C280 no 4th gear?

I've got an issue wit my transmission. if I manuall keep it in 2nd or 3rd it will work fine, if I leave it in "D" it will go through 2nd and 3rd then when 4th is supposed to hit I get what feels like neutral. I've recently done a full rebuild on this motor and I had to replace the transmission wiring harness. I don't know if it had 4th gear before all of this as it wasn't running at that time.
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  #2  
Old 05-27-2014, 04:28 AM
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I had the same thing happen to my 1996 c280... Its still sitting there...

Let me know if you find out anything..
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  #3  
Old 05-28-2014, 09:07 PM
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The C280 is a 722.4 trans, which is just a 722.3 with small differences. It could be a B2 piston since I've heard this sing-song before. Since I'm not sure, I will tell you this it most likely is more than just an adjustment.

I recall the build thread from another forum. So it probably wasn't parked because of engine related issues alone and more like they wanted to unload it for more than they described or "forgot".
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Old 06-24-2014, 05:19 PM
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Did you ever figure the out? Mine is doing the exact same thing.
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  #5  
Old 06-24-2014, 05:54 PM
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Location: El Dorado Hills, CA, USA
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Atomic Man,

Not sure what planet you live in, but on the USA cars. The driver's side of the transmission is device called the modulator, and it has an adjustment also a vacuum line. Disconnect the vacuum line for its continuous path, and the presence of vacuum. If oil dribbles out of the modulator from the nipple you need a new modulator of the same color. You can attach a vacuum hose test the modulator with a vacuum tester, or suck on it your self for leaks or actuation sound.

Yes, The B2 is the culprit too, and the culprit is the inner black seal of the B2 seal.

Here are some threads that can help you:

DIY W201 Transmission Modulator Removal, Replace, Trobleshooting & Common Problems - Mercedes-Benz Forum

How to Replace Your Oil Cooler Lines

Hope it helps,

Martin
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  #6  
Old 06-24-2014, 10:24 PM
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Quote:
Originally Posted by MAVA View Post
Atomic Man,

Not sure what planet you live in, but on the USA cars. The driver's side of the transmission is device called the modulator, and it has an adjustment also a vacuum line. Disconnect the vacuum line for its continuous path, and the presence of vacuum. If oil dribbles out of the modulator from the nipple you need a new modulator of the same color. You can attach a vacuum hose test the modulator with a vacuum tester, or suck on it your self for leaks or actuation sound.

Yes, The B2 is the culprit too, and the culprit is the inner black seal of the B2 seal.

Here are some threads that can help you:

DIY W201 Transmission Modulator Removal, Replace, Trobleshooting & Common Problems - Mercedes-Benz Forum

How to Replace Your Oil Cooler Lines

Hope it helps,

Martin
HAHA! I just realized I replied to my own thread. I was searching on my phone and didn't notice. lol, wow do I feel stupid.

Thanks for the info I'll go check on these
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