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Discussion Starter #1 (Edited)
560SEC transmissions stuck in second gear

My car suddenly stopped shifting up from 2nd gear:surrender:. Sometimes it is even stuck in 1st gear:surrender::surrender:. It worked fine the day before. I really don't think it's the kick-down switch.
I had the transmission rebuilt in 2008 at a transmission shop and I replaced the K1 spring a few months ago myself. Now I took it to a reputable euro shop for the no-shift issue and they replaced the modulator as a first remedy. Alas, they just phoned to say that it did not make a difference.
1. Could I have screwed up the K1 spring replacement as to cause it to stop up-shifting after some time has passed?
2. I'll check the kick-down switch.
3. I'll check the vacuum lines for vacuum but I'm sure the new shop did it...
4. We had a lot of snow here and I'm sure I've scraped the bottom of my car several times in snow/ice. Could something have been knocked out of place?
5. Any other ideas, before I take the transmission for a major re-built?
6. Fluid level is OK and good color...
 

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1988 Mercedes Benz 420SEL 258,000 miles (SOLD) 1991 300se 168,000 miles, ASR 1999 GMC Yukon 192,000
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1,376 Posts
mine does that when the fluid is low... my two cents check for leaks the dipstick is not honest....
 

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Discussion Starter #4
So, I've narrowed it down to:
1. Inoperative/blocked centrifugal governor, or
2. Blockage in the valve body

Is there any way to flush the transmission to try and remove the suspected blockage or it requires dropping the pan?
 

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1988 Mercedes Benz 420SEL 258,000 miles (SOLD) 1991 300se 168,000 miles, ASR 1999 GMC Yukon 192,000
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1,376 Posts
u try pouring any kind of tranny cleaner fluid in? its worth a shot at least
 

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1986 420SEL/1995 E300D/4 BMW’s/2 Vanagon’s
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1,026 Posts
Did you make sure your bowden cable didn't loosen up and "adjust" itself?
 
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