Quote:
Originally Posted by Knuckleballerr
I'm running into numerous issues after having changed a transmission on a 84 300sd.
Firstly, there is this AWFUL vibration that feels like I have square rims or a flat tire. I had to disable the ebrake on the back left tire (drivers side) because it locked up. Yet I'm still having this problem. Its not a subtle vibration but a horrible "cars about to explode vibration" from approx 5 mph to 40's.. then calms down at roughly 50. Tranny seems to shift fine and i'm not having any problems as far as that.
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Ouch. Are you sure that the drivetrain (driveshaft/transmission/engine especially) is all hooked up correctly? Is the flex disc dead? Differential mounts? Does the vibration coincide with a shift into fourth?
Quote:
Originally Posted by Knuckleballerr
The transmission dipstick tube isn't down flush, and the fluid is "milky" because (i believe) the transmission is sucking air in. Since the bolt is nicked, i plan on applying epoxy for the problem and of course a flush. May this be the vibration issue i'm noticing?
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Milky fluid might indicate coolant leaking into the transmission oil cooler (Bad! Bad! Bad!). I would definitely try to figure that out as soon as possible -- these transmissions are extremely sensitive, such that Mercedes-Benz says that one should only use leather to wipe the dipstick, since fibers might escape from cloth and attack the transmission. In the same vein, I believe that a transmission flush is not recommended, but I am not sure of this
**. I would chalk this up as the source of the shaking problem, but I have never heard of a transmission producing horrible vibration on the way out.
Quote:
Originally Posted by Knuckleballerr
The second issue is I had the air intake off and exhaust pipe off as well. After driving around to test the tranny, it suddenly got VERY loud. Like a truck on steroids loud. Why is this so? I noticed the oil got very low because it leaked out of where the air intake would be. I'm told by several people this isn't much of a problem, but I wanted to make sure.
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Have you checked that the exhaust pipe has not loosened in some way? I assume that the noise has not coincided with the vibration, and that you never actually ran the engine with low oil.
**Can someone back me up/refute me?