My Tranny wont shift past second. if i put the shifter in s or d it basically goes in to nutral. i think it is just a vcuume leak but i don't know where start. it happed last night when i was driving after i had stoped at a stop light it shifted just fine through first and second but then it was like it could not catch. I did not notice any leaking fluid or any thing but i know that my front main seal is "weeping" (mechanic) fluid. i have been driving it for 7,000 miles now since i ownded it and shes never done this before. About 3,000 or so miles ago i did a tranny fluid and filter change. so any advice would be help full. sorry for all of my Spelling errors was in a hurry.
P.S. I can drive up 40 mileas an hour so i could drive a little
Check the linkage arm that connects the shifter selection knob to the transmission. There a plastic bushing that wears out - or falls out, the links are connected by C washers. They that could have fallen off.
One of the linkage arms could have been damaged by hitting something on the road - an event you would remember.
Vacuum modulator – part of the integrated vacuum system for the ACC, engine shut-off, and transmission, among other things. You could have a leak or vacuum line undone. Loss of vacuum pressure may cause the transmission to shift incorrectly.
A vacuum modulator regulates the shift quality and the alters the shift point a bit. More vacuum yields a harder later shift, less vacuum yields a softer earlier shift. With old age, a vacuum modulator may begin to leak vacuum pressure and is a reasonable part to replace for preventative maintenance.
It is fairly easy to test the vacuum presuure at the modulator. Inoperative vacuum presuure is common problem and an inexpensive place to start diagosing the problem. The front servo piston could be defective, or the servo lip seal could be leaking, and not generating enough pressure for operation of the forward gears.
Last winter, I was having a similar problem (no or very slow and limited engagement of the reverse gear) Either the hot summer weather or a seal additive expanded the seal (at the servo piston?) and the problem went away. Replacement of the servo seal is a fairly inexpensive repair. It's still on my repair list, pending the confirmation of the adverse effects of winter weather. Some of the recommendations listed are expensive.
Could this shift linkage bushing be damaged because of the little accident I got involved in? Got hit behind at less than 5mph twice on the same occasion, and the transmission was in Park. Car moved forward 2 to 3 feet.
If this is so then I'll contact my insurance about it. What about transmission mounts? Or engine mounts?
I would call several local Mercedes Dealers, Mercedes Transmission Rebiulders, and or a Technical Advisor on the the Mercedes- Benz offical website. If you can find a Mercedes- Benz Transmission expert that will report, (to you or your insurance company) that moving a Benz 2 - 3 feet, (a couple of times), with the transmission in park, could very likely cause transmission problems. Then the insurance company can respond to the expert advise.
I really don't think the insurance compnay could diagonsis the casue of the problem, by looking at the outide of the transmission housing.
I'll try and find the website a good Mercedes Transmission Company.
I'll see if I can find an MB dealer here, maybe they have a technician I could ask? Would you think they'd ask me to pay for just an inquiry?
I shouldn't have stepped down from the car, otherwise it would have just been the bumper to be concerned about (I went down and that's when he hit the car again, luckily I wasn't in the middle looking at the damage). Should you think I should file for "dangerous driving"? He couldn't find the brake pedal and that's why he hit my car again.
Thanks for any help, appreciate it.
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