heavy "clunk" when going into 1st when slowing down. - Printable Version +- STD (https://www.superturbodiesel.com/std) +-- Forum: Tuning (https://www.superturbodiesel.com/std/forumdisplay.php?fid=6) +--- Forum: Drivetrain (https://www.superturbodiesel.com/std/forumdisplay.php?fid=9) +--- Thread: heavy "clunk" when going into 1st when slowing down. (/showthread.php?tid=2749)

heavy "clunk" when going into 1st when slowing down. - randomdude - 06-25-2011 when i slow down to a stop, when it downshifts into first, i get a fairly heavy "clunk". the car does generaly shift a bit hard into second, and has a slight flare into 3/4. all which seems to be standard fare for these trans when they get a few miles on them. correct assumption? would a filter/flush/fill help? im sure i need to get the Msource pressure/setup kit and adjust it. man that spring kit from smokedog&kens looks real nice, and sounds like it alleviates most of these issues. do you have to take the trans apart to install that? thanks in advance RE: heavy "clunk" when going into 1st when slowing down. - larsalan - 06-25-2011 vacuum line is connected to the trans and VCV? RE: heavy "clunk" when going into 1st when slowing down. - led-panzer - 06-25-2011 The clunk is the driveshaft center support. Very good idea to replace it soon, if it breaks completely you won't be going anywhere over 15mph ask me how I know RE: heavy "clunk" when going into 1st when slowing down. - randomdude - 06-25-2011 good info! thanks. where is the vcv please? and where should it connect at the trans? (my first benz). RE: heavy "clunk" when going into 1st when slowing down. - larsalan - 06-25-2011 I believe the vacuum line going to the top tees and one leg goes to the trans modulator. find a good picture of the modulator somewhere http://www.google.com/search?q=w123+trans+modulator&hl=en&prmd=ivnsfd&source=lnms&tbm=isch&ei=nbMGTq3_BK6o0AGbiq2DCw&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CAsQ_AUoAQ&biw=1024&bih=495 It's tight between the body and trans. On the driver's side where you can just barely reach up to it and slide on the vacuum line or make a pressure adjustment. RE: heavy "clunk" when going into 1st when slowing down. - randomdude - 06-26-2011 hrmmm sounds VERY interesting. does ANYONE have experiece with the MSOURCE adjustment kit then? RE: heavy "clunk" when going into 1st when slowing down. - randomdude - 06-30-2011 is there any other things it could be? is my transmission going to blow up? lol RE: heavy "clunk" when going into 1st when slowing down. - led-panzer - 06-30-2011 Did ya crawl under and look at the center mount?