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#1
06-28-2001, 04:47 PM
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Just bought a 82 300 TD w/ 177k on it. When shifting into "D" or "R" there is a momentary delay before engaging and an audible "thunk". Not grinding, just engaging. Noted in maintainace records that previous owner had taken car into mechanic and mechanic noted on bill "client states that transmission not functioning correctly. Adjusted modulator".
Please advise. Thank you! 
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#2
06-29-2001, 05:44 PM
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The modulator has NOTHING to do with initial engagement of the trans. Have you ever been in a simular car as yours to check the trans engage?
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
06-29-2001, 06:23 PM
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I have an 84 300TD w/165K and have developed this same problem. For me it happens when shifting from Park to Drive or Reverse. I had a leak in the transmission cooler line on the driver's side. After replacing this it's a little smoother, but still not the way it used to be. Any ideas?
__________________
1984 300TD Turbo 156Kmi "He who seeks knowledge begins with humbleness" - Buju Banton
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#4
06-29-2001, 07:19 PM
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my 84 300d turbo with 118,000 does that too. i just learn to live with it.
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#5
03-26-2002, 02:15 PM
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pkmorgan17,
I know this posting was from a while back, but did you ever fix that 'thunk'? Just curious, because the note, "...adjusted Modulator" caught my eye. I just recently "adjusted the modulator" on my '81 300TD-T to make my shifts a little more hard. It is very simple, and easy to find. On the driver's side, just above the AFT pan, there is a 1/2 dollar sized (green on my car) modulator. Pop off the sm There you will find a very small "T" shaped key. Turn the key 1/4 turn clockwise for harder shifts, 1/4 turn for softer shifts. This has nothing to do with the shift timing, only the softness/hardness.
__________________
Current: '91 300TE 4MATIC 317k and climbing... Former: '81 300TD Wagon 168K "Tank" '83 240D 216K 4spd manual "Da Bear" (aka best car ever) "Never sweat the petty things... and never pet the sweaty things."
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