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  #1  
Old 08-07-2003, 12:00 PM
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Join Date: Jul 2002
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1991, 190E, 2.3. Automatic Transmission kicks shifting up.

1991, 190E, 2.3. Automatic Transmission kicks shifting up.
Howdy all,
1991, 190E. The transmission had a definite firm shift. I found that I really had to let up on the accelerator pedal to get a smoother shift. I thought the firm shift is common in Mercedes."it kicks the whole car forward" but smooth when shifiting down? Does anyone know why the transmission shifts with a kick?
Or if there is a product or something I can adjust to help smooth the shifting.
Thanks in advance.
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  #2  
Old 08-07-2003, 12:40 PM
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Join Date: Jun 2001
Location: San Francisco, CA
Posts: 3,097
Omran

Did this car always do this or did it just start happening?

There are several different reasons (and cures) for hard shifting. How many miles on the car?

You can adjust the timing of the shift by adjusting the transmission bowden cable, but the firmness is a result of pressure.

Does it shift hard through-out all gears?

Have you expereinced power loss?

It could be the vacuum line and/or the connector going to the vacuum modulator on the transmission. It could be the vacuum modulator itself. There is an adjustment for the pressure on the side of the transmission, but before adjusting that, I would make sure you don't have some other problem.

Keep us posted,

Haasman
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Old 08-08-2003, 10:29 AM
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Join Date: Jul 2002
Posts: 8
"Did this car always do this or did it just start happening?

I bought this car for over a year, and yes it did shift hard.




"There are several different reasons (and cures) for hard shifting. How many miles on the car?"

The car has 87K


You can adjust the timing of the shift by adjusting the transmission bowden cable, but the firmness is a result of pressure.

"Does it shift hard through-out all gears?"

Yes, but not down shifting


"Have you expereinced power loss?"

No

It could be the vacuum line and/or the connector going to the vacuum modulator on the transmission. It could be the vacuum modulator itself. There is an adjustment for the pressure on the side of the transmission, but before adjusting that, I would make sure you don't have some other problem.

Thanks
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