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-   -   Transmission won't shift when it's cold (http://www.peachparts.com/shopforum/diesel-discussion/239660-transmission-wont-shift-when-its-cold.html)

johnathan1 12-08-2008 08:04 PM

Quote:

Originally Posted by kerry (Post 2041892)
No cable on a 77. It has a series of rods going from the accelerator linkage on top of the valve cover down thru the intake manifold and back to the right side of the transmission.

That's what I thought, but I just wanted to be sure. ;) Thanks for clearing that up. :)

79Mercy 12-16-2008 05:31 PM

Quote:

Originally Posted by wilbur (Post 2041357)
I have 81 240D. The transmission won't shift in cold weather until engine is up to temperature. I don't know if it's the modulator valve, or if it's vacuum or fluid related. Any help would be appreciated. Thanks very much.:confused:

Anyone know what causes this problem????

79Mercy 12-17-2008 03:42 PM

bump

mplafleur 12-17-2008 05:54 PM

I had something like this before with a 190D. It ended up being a vacuum leak. The leak went away when the engine got to 40 deg C.

TexasTony 01-08-2009 03:24 PM

Cold weather not shifting
 
I am having the same problem. Here in Texas when it's below 50F, it takes a mile or two to warm up before it shifts through all the gears. I talked with Roy, & he walked me down some things to look into. I believe the problem is the vacuum part that is mounted on the side of the transmission. He said to take off the vacuum line going down to the transmission, & suck a vacuum on it & leave it for an hour. Use a mity vac. There should be no leak. Mine didn't hold for 1/10th of a second, so I'm sure that's the issue. Follow the vacuum line down from the engine to the passenger side of the transmission, near the front. Mine is red, they are different colors for different years. Not too expensive, & they also have an adjustment on them. Now to just replace it...

Let us know what you find on yours. Roy was a big big help, I definitely recommend them for parts & for technical help.
Thanks
-tony

79Mercy 01-08-2009 04:12 PM

Let us know if it solves your problem, I'll check mine tomorrow.

captainmonk 01-08-2009 04:40 PM

my sdl hates the cold too
hardly moves till wamed up

79Mercy 01-13-2009 05:55 PM

Any more ideas as to why it wont shift when cold?

Scruffyguy1981 03-11-2010 07:04 PM

*bump*

Did anyone ever figure out a solution for this? My sd will hit really high rpms before it shifts when cold (not exactly what I want to do to a cold engine) but shifts just fine when at temp.


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