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  #1  
Old 02-15-2005, 03:04 PM
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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.

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Old 02-15-2005, 03:19 PM
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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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Old 02-16-2005, 08:08 AM
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Cool

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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  #4  
Old 02-16-2005, 11:14 AM
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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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