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#1
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no upshift on 300d
My 1991 300D 2.5 turbo has always shifted perfectly for the last 200,000 miles. Today all of a sudden it will not up-shift out of low gear. Reverse works fine.
Tell me it’s nothing to serious….please. |
#2
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Try unhooking the kick down switch. This switch is a button located underneath the carpet below the accelerator.
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#3
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The 722.4 trans inthe 300D 2.5 uses plastic governor gears! MANY times they sheer-off due to a spring from the REAR oil pump. At that point all you gave is first & reverse. VERY common failure that requires about 4-5 hrs labor & $50. in parts.
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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 |
#4
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I had a problem like this with a Chevy van. The governor assembly just slid out the side of the transmission. Can you get this out of the Benz transmission in a similar manner?
You mentioned a spring from the rear pump. Is this something that causes the plastic gear to fail? Does it need to be replaced also? |
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