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tranny problem
I have a 1983 300D turbo, automatic. When I put the car in drive or reverse it doesn't move right away, there is a long delay. I push the pedal and the engine just revs. When it does move, it moves slowly. Prior to this it was driving but had no power at all. I diagnosed it to be a vacuum issue.
I have replaced the engine vacuum lines and the 3/4 way T's. I also replaced the yellow check valve, the vacuum tranny damper/dashpot (000 304 02 34 green check valve), the vacuum central plug (it was dry rotted), and the 2/3 way valves and flippers on top of the valve cover under the black lid. I have a new tranny vacuum modulator but have not installed it. Any thoughts? matt sw8_2dg@yahoo.com |
#2
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Answer
Multiple issues are possible:
* Low transmission fluid ? * Vacuum not reaching the modulator? * Bad vacuum modulator? * K1 springs bad ? * B2 piston failure ? * Damaged/mis-adjusted Bowden Cable ? * Damaged clutch friction disc's ? Transmission: info on 722.3 - 722.5 transmissions http://www.peachparts.com/shopforum/showthread.php?t=99833 Vacuum Modulator links thread http://www.peachparts.com/shopforum/showthread.php?t=248103 transmission slipping need expert advice please http://www.peachparts.com/shopforum/showthread.php?p=566361 MERCEDES-BENZ TRANSMISSION VACUUM CONTROL SYSTEM "TUNING" by Steve Brotherton First Published in: ImportCar∞ Feb 2002 http://www.peachparts.com/Wikka/TransVacTune Transmission shifting response & “vacuum span” (Stevebfl, are you out there?) http://www.peachparts.com/shopforum/showthread.php?p=100041 It's CRITICAL... how you set your transmission's vacuum system on your diesel MBZ... http://www.peachparts.com/shopforum/showthread.php?t=158216 Vacuum Control Valve http://www.peachparts.com/shopforum/showthread.php?p=869411 Bad Vac Control Valve? http://www.peachparts.com/shopforum/showthread.php?p=834716 I broke the K1 repair kit!!! What did I do wrong? http://www.peachparts.com/shopforum/showthread.php?t=141392 K1 Spring Kit http://www.peachparts.com/shopforum/showthread.php?t=137381 another K1 thread http://www.peachparts.com/shopforum/showthread.php?t=140495 Run, don't walk, to the dealer, get a K1 kit!!! http://www.peachparts.com/shopforum/showthread.php?t=144934 replacing B1 piston http://www.peachparts.com/shopforum/showthread.php?p=962646 B2 Piston Failure http://www.peachparts.com/shopforum/showthread.php?p=1048115 722.118 transmission B2 servo/piston *B2 Piston* http://www.peachparts.com/shopforum/showthread.php?t=131124 I Am Really Hurt Now *B2 Piston* http://www.peachparts.com/shopforum/showthread.php?t=106317 car won't reverse!!!!!!!!!! HELP!!!!!!!!! *B3 piston* http://www.peachparts.com/shopforum/showthread.php?p=963365 Two threads the same title, but different authors and content. Bowden Cable http://www.peachparts.com/shopforum/showthread.php?t=54776 http://www.peachparts.com/shopforum/showthread.php?t=41603 Replacing all shifter bushings on W126 - p.1 http://www.peachparts.com/shopforum/showthread.php?t=112582 The master threads where the links came from.. Fast navigation Do It Yourself Links http://www.peachparts.com/shopforum/showthread.php?t=146034 Transmission: http://www.peachparts.com/shopforum/showthread.php?t=142395 Note: Moving this thread to "Diesel Discussion" for more on topic answers. Have a great day.
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
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Why do you keep reposting this? You've already got answers in the other threads you started...your problem is likely the B3 piston for reverse, which is included in the links above. It may also be the B2 for forward motion, but you really need to begin troubleshooting. Check the fluid levels before anything.
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TC Current stable: - 2004 Mazda RALLYWANKEL - 2007 Saturn sky redline - 2004 Explorer...under surgery. Past: 135i, GTI, 300E, 300SD, 300SD, Stealth Last edited by tbomachines; 01-04-2010 at 09:39 AM. |
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