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Old 09-16-2013, 06:47 PM
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Join Date: Apr 2007
Posts: 232
300D not shifting out of 2nd

1984 300D will intermittently stay in 2nd gear and not upshift.

I disconnected the Kickdown switch connevtion under the pedal think that may help-but 4 out of 5 times when dribving, the 300D will not upshift out of 2nd.

Sometimes I can stop the car, turn off the igintion, wait 10 seconds and turn the inition back on and now 300D will shift fine.

Reverse is OK.

Any thoughts? Assistance is appreciated!

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Old 09-16-2013, 06:49 PM
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Join Date: Jan 2002
Posts: 18,355
I don't think the key has anything to do with it. Can you shift it up thru the gears manually? What happens when you hold the pedal to the floor and wind it out? Will it up shift at high rpm's? Is the bowden cable moving freely?
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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Old 09-16-2013, 06:54 PM
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Join Date: Jul 2008
Posts: 3,740
Have you replaced any of the shifter bushings?

How's your vacuum system? Any leaks?

How's the linkages? Specially the one on the firewall....

When was the last time the transmission was serviced?
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Old 09-16-2013, 06:55 PM
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Join Date: Apr 2007
Posts: 232
Thanks for your reply

Bowden cable seems snug. The 300D will run wide open, RPMs roaring-but no upshift

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