shift points - PeachParts Mercedes-Benz Forum

TheDon · #1 11-22-2005, 01:24 PM

i took my 300D out today and it was shifting high.. im guessing it starts in first but it was going up to around 4k to go up to the next gear after starting.. i know this cant be normal.. or is it? i bet its something with the vaccume as the tranny was replaced by the p/o

boneheaddoctor · #2 11-22-2005, 01:41 PM

Quote:

Originally Posted by TheDon

i took my 300D out today and it was shifting high.. im guessing it starts in first but it was going up to around 4k to go up to the next gear after starting.. i know this cant be normal.. or is it? i bet its something with the vaccume as the tranny was replaced by the p/o

bowden cable...was this with pedal floored or at partial pedal? To raise the full pedal shipt point tighten the bowden cable...to loewr them (full pedal only) loosen the cable.

Part pedal shift problems are something else altogether.

TheDon · #3 11-22-2005, 01:53 PM

where would this bowden cable be and how to adjust

i just took it around the block and after taking off from a stop at WOT it took til 4.5k to shift up.. so would the bowden cable be something to adjust?

what is the redline on these engines

i wonder if the mechanic that put the transmission in wasnt familare with mercedes's or just forgot about the bowden cable all together

boneheaddoctor · #4 11-22-2005, 01:57 PM

Quote:

Originally Posted by TheDon

where would this bowden cable be and how to adjust/.

its the cable that goes to the top of the valve cover from the passenger side firewall area.

turn addjuster clockwise to loosen cable....turn adjuster counter clockwise to tighten cable...(lookong at it from drives side)

TheDon · #5 11-22-2005, 02:02 PM

i just adjusted it.. man it was all the way out so i screwed it in halfway...

boneheaddoctor · #6 11-22-2005, 02:05 PM

Quote:

Originally Posted by TheDon

would that be the big red thing?

Mines white....and just like a brake adjustment on a bicycle...just look at the end of the cable on the valve cover....it is held by somethnig threaded..screw that in the required direction to either put more or less tension to the linkage....more tension = higher shift point...less tension = lower shift point....applies to the rod linkage of the older ones also(pre cable)

TheDon · #7 11-22-2005, 02:11 PM

so did i adjust the right thing.. not the red thing but the cable that runs down the passenger side. its halfway in .

i took it around and it shifted at 3k instead of 4k also it didnt jerk when shifting while cruising

boneheaddoctor · #8 11-22-2005, 02:12 PM

Quote:

Originally Posted by TheDon

so did i adjust the right thing.. not the read thing but the cable that runs down the passenger side. its halfway in .

i took it around and it shifted at 3k instead of 4k also it didnt jerk when shifting while cruising

yes...sounds like you got the right adjustment.

TheDon · #9 11-22-2005, 02:13 PM

thanks.. ill play with it more as soon as i can get out onto the highway.. i just got the insurance card for it so friday im going to get a plate and such.

as long as i can cross the road to turn and such i will survive

boneheaddoctor · #10 11-22-2005, 02:15 PM

Quote:

Originally Posted by TheDon

thanks.. ill play with it more as soon as i can get out onto the highway.. i just got the insurance card for it so friday im going to get a plate and such.

as long as i can cross the road to turn and such i will survive

adjust it to suit your driving when its legal...I preffer something above 3K but whatever works for you.

JamesDean · #11 11-22-2005, 02:33 PM

wont a higher shift point use more fuel? I used to have mine shift 1-2 @ 3500 and 2-3 @ 3000

thanks
kris

TheDon · #12 11-22-2005, 02:34 PM

phew good mine is shifting like yours.

#13 11-22-2005, 03:25 PM

Quote:

Originally Posted by JamesDean

wont a higher shift point use more fuel? I used to have mine shift 1-2 @ 3500 and 2-3 @ 3000

thanks
kris

Sure, I have mine set so it normally shifts around 3 or 3.5K with about half throttle, but I can make it shift sooner by lifting the throttle a little. Experiment by changing it about half a turn at a time until you get it the way you like it.

boneheaddoctor · #14 11-22-2005, 03:44 PM

Quote:

Originally Posted by JamesDean

wont a higher shift point use more fuel? I used to have mine shift 1-2 @ 3500 and 2-3 @ 3000

thanks
kris

Mine is set to 4,000 and I get 26 mpg average commuting fron downtown DC to a few miles outside the beltway.....which is above average for these cars. Keep in mind this is full pedal shift point....part pedal shifts points are not externally adjustible.

JamesDean · #15 11-22-2005, 04:05 PM

26mpg! i barely get 20mpg. I dont understand how i am gettign such low MPG number yet people with the same car as I are getting much higher.