Transmission Kick when put into Gear - Mercedes-Benz Forum
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#1 (permalink) Old 07-28-2008, 02:13 PM
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Transmission Kick when put into Gear

Hello,

I have a 93 300SE 3.2L i was looking for your knowledge. In my 300SE when i shit it into Gear (ex. from Park to Reverse or neutral to Drive) the Car gives a little kick shifting into the gear?

Also lets say as i approach the traffic lights and its red so i let go of the gas and as i catch up to the cars and its time to for me to accelarate again without a complete stop the car gives a kickdown kick when it shifts back into either the 3rd or 2nd gear, is there any Transmission part (Flex Disk, Mount) that may resolve this or is it normal just because the tranny has its years?
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#2 (permalink) Old 07-29-2008, 02:01 AM
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I could be because you "shit" in your gears .....
No, seriously. It could be the oil, the flexdisc, or the converter or maybe also the linkage ..
Have the oil been changed lately ?
Is there enough oil in the gearbox ?
How good is the oil ?
What's the mailage on the car ?

1991 W140 400 SE - SOLD !!
1973 W115 200 -For sale as project.
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#3 (permalink) Old 07-29-2008, 07:56 AM
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"It could be the oil, the flexdisc, or the converter or maybe also the linkage ..
Have the oil been changed lately ?
Is there enough oil in the gearbox ?
How good is the oil ?
What's the mailage on the car ? "

1. Yes, replaced Transmission Oil Filter 2 times to insure i got all the gunk out
2. Yes, i checked the gearbox oil while the car was on in Neutral and ran for about 10 minutes.
3. I used Mobil 1 Synthetic Transmission Oil ($8.00/quart)
4. the Car has 130,600 miles

So do you think it will be smart to replace the Flexdisc?

and by linkage do you mean the linkage from the tranny to the rear axel basically where the flexdisx is at?
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#4 (permalink) Old 07-29-2008, 08:44 AM
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ummmm.... I thought that was normal with automatic gear boxes?
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#5 (permalink) Old 07-29-2008, 10:37 AM
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I thought the same i just wondered......cant complain got the car for $2700 and its a Mercedes-Benz
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#6 (permalink) Old 07-30-2008, 04:29 AM
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2. Yes, i checked the gearbox oil while the car was on in Neutral and ran for about 10 minutes.

That's not long enough. You have to have the trans at 80 deg C, so take it out for a drive for 30 minutes or so before you measure it.

Flex discs should be easy enough to diagnose. Just crawl under and look. While you're under there, check the transmission mount and the two differential mount bushings as well.

"It's not about how fast you can go, but how well you can go fast."

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'97 S420V, Smoke Silver Metallic/Tan, (RIP 22 Oct 2012, 178627 miles) He gave his life to save mine.
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#7 (permalink) Old 07-30-2008, 07:27 AM
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If the flexdisk(s) were never done, after 130k miles you will feel a difference. I need to get mine done, my front disk has a big crack in it and the rear one is slightly worn, but mainly that front one...

I had it done on a '95 W202 C220 with over 136k miles and it immediately made a HUGE difference, the car felt like a different car almost, much smoother.

I suggest you have both flex disks done, the parts aren't too expensive and if you know somebody with a lift it's not a difficult job to DIY, but the labor on the job shouldn't be too bad either, if you just take it in.

Matt

1996 C220... aww yeah, base model!
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#8 (permalink) Old 07-30-2008, 03:09 PM
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Cheapest 1st repair would be to change the transmission rubber mount. Could be worn out given the year of the car.
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#9 (permalink) Old 08-25-2008, 06:28 AM
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Did you find any solution to this? I have the EXACT problem.

Thanks in advance.
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#10 (permalink) Old 08-25-2008, 10:45 AM
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Did you find any solution to this? I have the EXACT problem.

Thanks in advance.
the 722 tranny manual reads the following:

"HARSH ENGAGEMENT WHEN SHIFTING GEARS:

Incorrect working pressure. Check and adjust modulating
pressure. Check vacuum line and connections for leaks. On vehicles
equipped with diesel engines, check vacuum control valve. Coolant
entering transmission oil cooler and contaminating transmission fluid.
Replace radiator. If necessary, replace all friction linings and/or
replace transmission.

HARSH ENGAGEMENT WHEN SELECTING "D" OR "R":

Idle speed too high. Check pressure receiving (pick-up)
piston in valve body for ease of operation and correct installation.
Replace valve body (if necessary).
NOTE: Pressure pick-up requires a running period of approximately
2 seconds. Harsh engagement may occur during repeated shifts
between "N" and "D". If harshness takes place within 2
seconds, condition is considered normal.

HARSHNESS ON 4-3 DOWNSHIFT

Sealing ring on release end of band B-2 worn or damaged. Band
B-2 piston worn or damaged. Band B-2 thrust body damaged."

Garage:

Mercedes-Benz, W140 S Class S320 (AKA 300SE)

Mercedes-Benz, R230 SL Class SL55 (///AMG)

Mercedes-Benz, R129 SL Class SL500 (AKA 500SL)

Mercedes-Benz, W163 ML Class ML430 (Designo Edition)

Triumph Daytona 955i - SSSA

Former Mercs:
W140 S Class 500SEL(sold) - W140 S Class S320(sold) - W140 S Class S500(sold) - W140 S Class 500SEL(sold) - W201 190E 2.3(sold)
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