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#1
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AutoTrans Kickdown Question - 300E
Can you kickdown trans. in speeds over 120kms.?
i floored the gas at 120 kms. but transmission doesn't downshift, car will however speed up. is this normal? |
#2
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It *should* kickdown into 3rd gear at something like 90 or 95 mph. So when you say 80 mph (roughly 120km/h), that does seem too low.
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2006 E350 w/ 155k miles (Daily Driver) Previous: 1993 300E 3.2L Sedan w/ close to about 300k miles 2003 E500 Brilliant Silver (Had 217k miles when totalled!) 1989 300E with 289,000 miles (had for <1 yr while in HI) 03 CLK 500 cabrio (Mom's) 2006 C230k (Dad's) 1999 S420 (Mom's/Dad's) 2000 C230k Sport sedans 2001 CLK320 Cabrio (Mom's) 1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!) |
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thanks for the reply, will try that in an opportune time.
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#4
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yes, it could kick dowm , have you check the auto tran fluid level?? and the fuse???
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#5
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The fluid shouldn't have a factor in kickdown speed (but should be checked anyway!). And to the best of my knowledge, there is no kickdown fuse.
Joel, Check to see if the transmission is kicking down at lower speeds... IE, go 15 mph, floor it (into kickdown) and see if it kicks down into first gear. You might need to adjust something with the transmission.
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2006 E350 w/ 155k miles (Daily Driver) Previous: 1993 300E 3.2L Sedan w/ close to about 300k miles 2003 E500 Brilliant Silver (Had 217k miles when totalled!) 1989 300E with 289,000 miles (had for <1 yr while in HI) 03 CLK 500 cabrio (Mom's) 2006 C230k (Dad's) 1999 S420 (Mom's/Dad's) 2000 C230k Sport sedans 2001 CLK320 Cabrio (Mom's) 1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!) |
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david- yes, it does at lower and moderate speeds!
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#7
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A topic of interest that i share with David! Joel, what about your upshift points - while accelerating does the transmission shift at or near the red line when you hit the kickdown switch? My tranny behaves the same way with kickdown but it is also "low shifting" meaning it shifts about 1k rpm lower than it should when accelerating...
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joE 1993 300e-2.8 - gone now <sigh> "Do not adjust your mind, it's reality that's malfunctioning" http://banners.wunderground.com/bann...L/Key_West.gif |
#8
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Ok, so your kick-down is working properly.......
the problem lies elsewhere. JSmith has a somewhat similar, but more sever problem (I believe). Maybe he can give you some clues on where to go from here. How else is the operation of the transmission? If you have it floored into kickdown, will it redline before shifting into the next gear? Some adjustments probably need to be made. GOOD LUCK.
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2006 E350 w/ 155k miles (Daily Driver) Previous: 1993 300E 3.2L Sedan w/ close to about 300k miles 2003 E500 Brilliant Silver (Had 217k miles when totalled!) 1989 300E with 289,000 miles (had for <1 yr while in HI) 03 CLK 500 cabrio (Mom's) 2006 C230k (Dad's) 1999 S420 (Mom's/Dad's) 2000 C230k Sport sedans 2001 CLK320 Cabrio (Mom's) 1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!) |
#9
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it may just be an adjustment of the bowden cable - check this thread out:
downshifts and here's the thread where Steve B. and Mike F. weighed in and told me about valve body adjustments. this would be useful to you if your car also has lower than normal shiftpoints while accelerating. What controls Full Throttle/Kickdown on M104? reviewing my car's history i discovered that the bowden cable and the vacuum modulator were both replaced after they replaced the transmission. something definitely fishy going on in my tranny. i have an appointment to see a local MB indy about it and will post results.
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joE 1993 300e-2.8 - gone now <sigh> "Do not adjust your mind, it's reality that's malfunctioning" http://banners.wunderground.com/bann...L/Key_West.gif |
#10
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was able to road test the car tonight. everything is well.
it downshifted at higher speed. i was just too eager to engage the kickdown the other day - i floored it while picking up speed. tonight it kickdown when i floored it at cruising speed, which makes a lot of sense. it was kinda scary though since it was accelerating hard at 160kms. and, yes if i floored it, rpm will be very close to redline but not over, then it will shift to the next gear. Last edited by joel; 11-21-2001 at 01:45 AM. |
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