It's a 79 300SD. I just put another transmission (used) in it. It worked fine the first few times I tried it. Now, it won't shift out of low. I checked the vacuum at the modulator on the transmission. With the car idling, it has 16 inches at the modulator; 19 inches going into the vacuum thingy on top of the injector pump.

Can anyone tell me why I do this? I can think of several forms of self-mutilation that would be more fun.

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Richard

"Die Schadenfreude ist die reinste Freude"

If it has a nice interior and its rust free I'll give you $100 for it and save you the torture....

if you won't do that check the rod that goes up to the throttle linkage......

make sure it hasn't popped off and wedged somehow. I am assuming the floor shifter works correctly.

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

I'll add the suggestion to check the kickdown switch and wiring to the transmission.

Best Regards,
Jim

I'll second the kick-down switch. Disconnect it.

It could also be the bowden cable. If it's too tight, the tranny will shift real high (>3500 rpm)

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Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

the '79 300SD doesn't have a bowden cable..............


It has a solid rod..............

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Thanks for the suggestions, guys.... I checked the rod to the accelerator linkage and it seems right. I'll disconnect the kick-down switch today.

boner: I'm considering your offer... do you think you might want to drive it from Utah to Virginia in low gear? BTW, I have a blue 79 300SD that I am junking out... is there anything you need?

__________________
Richard

"Die Schadenfreude ist die reinste Freude"

I'm coming to utah this week, and I'll give you 200 bucks for it!

I got a brown 300SD parts car .......good engine and tranny..........looking for a good body and interior....for real cheap to go into

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Well, if I found one with a nice body, I'd consider buying it. Oh no, I told my parents I'd sell the SD when I got the SDL....whoops. Actually, my mom mentioned buying it from me because she likes it a lot. So, if I got this one I could put my engine and tranny in... let me know if he doesn't go through with it.
Thanks
David

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2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

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