That is very helpful! I will try to get the Mercedes Manual. Alex Chamberlain (to whom I'm very grateful) sent me the necessary pages from the W124 manual. I found that all of my inputs to the vacuum amplifier aka "blue flying saucer" were correct, but it still maintained too much vacuum at the transmission modulator, so I bypassed the amplifier, and connected the modulator directly to the IP valve. It now shifts *almost* perfectly, and I can use it this way until I can get my hands on another amplifier. Interestingly, mine does produce the correct output when I simulate the correct input, but it responds too slow, taking 5 or more seconds to reach the correct modulator pressure, which is pretty useless when you consider that the car reaches cruising speed at WOT in not much over 5 seconds.
Does anyone have a used vacuum amplifier aka "blue flying saucer" for sale? It would need to be from a turbocharged car (I think) so that it would properly respond to the boost signal from my 190D Turbo, but I'd bet any unit from a 1986+ W124 or W126 turbo diesel would work. Sincerely, Tyler William H Backman 1987 190D Turbo Biodiesel On Aug 17, 2008, at 1:38 PM, Robert Bigham wrote: > Hello Tyler > > If you don't have it figured out by now, maybe this will help: MBZ > published a separate > manual on the automatic transmission, ora at least they did on the > 123. Transmission > models are 722.2, 722.4, and like that. There's a boss on the case > with the model number > stamped on it. > > Failing the Mercedes Manual, try Automatic Transmission Service > Group (ATSG), who publish > overhaul manuals which surely must contain the information you are > seeking. Cost is > reasonable, like maye $15 plus mailing cost. > > Good luck. > >> 6. W201 190D Transmission vacuum diagram/advice needed >> (Tyler Backman) > >> Date: Fri, 15 Aug 2008 13:08:17 -0700 >> From: Tyler Backman <[EMAIL PROTECTED]> WROTE >> Subject: [MBZ] W201 190D Transmission vacuum diagram/advice needed >> To: Mercedes Discussion List <mercedes@okiebenz.com> >> Message-ID: <[EMAIL PROTECTED]> >> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes >> >> I have a 1987 190D Turbo, and the previous owners mechanic >> brilliantly >> "solved" a transmission control vacuum leak by hooking the >> transmission modulator directly to the vacuum pump, so it flared/ >> slipped like crazy but didn't shift harshly. I'm trying to reconnect >> everything properly, but can't seem to find a diagram that shows me >> what each port is on the vacuum amplifier, injector pump leak valve, >> etc. I have the Mercedes W201 manual CD, but it appears to make no >> mention of the transmission or vacuum system at all (which I find >> rather weird). Does anyone know where I could get this info? Even a >> W124 manual would be helpful! >> >> By "guess and check" I was able to get it working somewhat, but >> pressure at the transmission modulator still doesn't drop to 0psi at >> WOT, and I'm a bit worried that I'm going to fry my transmission if I >> drive it with too much vacuum at the modulator. >> >> I have to drive over 300 miles tomorrow, so I'm hoping to sort this >> out tonight :( >> >> Tyler >> > Sincerely, Tyler William H Backman Senior Bioinformatics Analyst Institute for Integrative Genome Biology (IIGB) e-mail: [EMAIL PROTECTED] 1007 Noel T. Keen Hall University of California Riverside, CA 92521 _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
