ok... when i floor it to the kick down, ive noticed that my car will not go to redline (6000 rpm's) it will only hit 4500 RPM's no matter what!!! i know theres probably more power after 4500 RPM's. On the other hand, does it shift at those RPM's due to timing purposes or is my car just being a little bitch. (lol!! it does "cry" in the morning... that is unless i shut off the motion sensors)
ok... when i floor it to the kick down, ive noticed that my car will not go to redline (6000 rpm's) it will only hit 4500 RPM's no matter what!!! i know theres probably more power after 4500 RPM's. On the other hand, does it shift at those RPM's due to timing purposes or is my car just being a little bitch. (lol!! it does "cry" in the morning... that is unless i shut off the motion sensors)
your tranny might have low working pressure, probably someone missed with the tranny pressure control line thinking he/she is tweaking the idle speed, the pressure line is the lower orange cable hooked to the throttle control. take the car to Mercedes mechanic who knows what he is doing, and have the adjust it, for someone who is well trained and understands how the merc tranny work, it will be a 5 min job. guess work, and you're looking at couple hours and really crappy performance afterword
other cause (less common) coule be bad governor in the tranny and 3rd cause is bad valve body
considering that 4500 is a set number for all gears, i tend to believe that the pressure link is causing it.
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Mercedes-Benz, W140 S class 300SE
oh yeah, and sorry for jumping ahead of myself, i thought about the more complicated stuff and forgot about the most obvious.
you said the car shits at full throttle+kick down @ 4500
try full throttle W/O kickdown... if the car still shifts at 4500 then you have a dead kickdown switch or open circuit
if the car shifts at something lower...say 4000 then we know the kickdown switch is doing something, and its a mechanical issue, so go back to the post above and check the 3 items above
I know the kick down switch works..... somebody else told me that it could be because of Winter mode or Standard mode... the car is in standard mode and i dont ever put it into winter mode..... Ive also tryed putting the car into gear 1 and drove like that up to 4500 RPMs and it seemed to be "governed" persay, at those RPM's untill i shifted to 2.
Keep in mind, this car was imported from germany, has no governor, and doesnt have working esp abs or check engine light. have no idea why, but it doesnt.
this car does not have OBII it only has the mushroom plug.
But, I'll get the tranny line checked. maybe that info helped a little more.
a broken/disconnected S/W switch can cause the problem as well. test the functionality of the S/W switch the same as above. try it once on S and again with W and see if the shift points are different (in absolute values). if they are then we know not to blame the SW switch, and look somewhere else. if the shift point is always 4500 then the switch might be stuck or shorted to W position.
like myarmar said, if you have a 96 you might have 722.6 and that cable doenst exist, however your car is not US spec so it might be different.do you have 1-2-3-4-D on your shifter? or 1-2-3-D?
I have 1234D...... also, shift points and power is equal when i switched from S to W....
maybe switch was dissconnected.... made not difference with the switch.
wow, thats a lot of info.... thanks for all of your help... when and if somebody gets that info, please let me know whats up.... i just think that there is more power under that hood than i would think.... idk..... why wouldnt it red-line....
722.3, 722.4 speaking, the switch flipped to W forces the car top start on 2nd gear and limits the torque, i am not 100% what it does on the top end.
722.5 doesnt have the switch, and starts on 2nd anyways unless you floor it.
722.6 i dont have the technical manual i need someone to confirm that W position on 722.6 limits the max rev speed
722.3/4 does not have a "W" switch, only S and E. Transmission
I think things are more complicated with the 722.6. One consequence of the "apation"
of driving style, (can be reset), is the alterations of shift points.
Read more about the 722.6 here; Transmission
Another good source of information on the 722.6 is the Crossfire Service Manual.
Here are page 2376! of that one;
i need someone to confirm that W position on 722.6 limits the max rev speed
Linear Mode
