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  #1  
Old 01-29-2017, 10:54 PM
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1983 300td transmission failure

Hello all
I just towed my car 500 miles from the UP of MI to Grand Rapids because it will not go in gear. I was backing up in a parking lot in the snows of Marquette, put the car in drive and nothing. It goes into P and then is in neutral if the linkage is in any other gear.
Is the oil pump gone on the transmission?
I have a manual out of a 240D but did not get the driveshaft. I would love to get rid of the auto and have the manual. Can I do this without the shaft from the other car? Would it even fit on the 5 cylinder?
How much work is it to fix the oil pump on the tranny if that is what my problem is?

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  #2  
Old 01-30-2017, 08:56 AM
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You could unhook one of your lines for a few seconds to see if it is pumping fluid. When I had the symtoms you describe my converter was shot cost about $1500 to have it replaced at a shop.
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  #3  
Old 01-30-2017, 09:13 AM
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I know this seems obvious, but also check to be sure there is fluid in it.
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  #4  
Old 01-30-2017, 09:14 AM
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Also, yes the 4 speed will fit. It's a common swap, just google it. You'll get lots of info on it and how you need to modify the driveshafts.
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  #5  
Old 01-30-2017, 09:23 AM
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Yeah. There is fluid. I will see if the fluid is pumping. The fluid would still be pumping if the torque converter was bad, right?
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  #6  
Old 01-30-2017, 10:26 AM
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Check your shifter bushings. A common problem on W123 cars which result in the shifter not shifting the transmission into the proper gear. An easy and cheap fix.
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  #7  
Old 01-30-2017, 11:14 AM
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You backed up. Have a look under the car using safety precautions. See if the driveshaft is turning in drive or reverse. You might have lost a cv joint.


Not a strong possibility but not one to overlook.
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  #8  
Old 01-30-2017, 05:19 PM
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I 2nd the shifter bushings ,running through snow could have loosened some hack job ,especially a shop were work goes out unchecked.New bushings but read up the "how toos "before starting ,these sometimes are difficult ,or for a quick fix you can cut some rubber hose that fits the rod tight then lg washers on either side,(the hack job Im talking about ) this will get you down the road for a little while longer.
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  #9  
Old 01-30-2017, 06:31 PM
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This is not a linkage issue as the arm on the trans is moving into all positions. It goes into and out of Park. The drive shaft is not spinning, though. I immediately put the car up on jack stands when this happened and saw these things. That is why I towed it so far. I normally would fix my car if I am 500 miles from home, but this looked worse than I thought.
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Old 01-30-2017, 07:02 PM
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So does the transmission make any sort of noise? The nut on the output flange can loosen off and stop transmitting power.

Linkage can cause this issue by the way, double checking is a good idea.
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  #11  
Old 01-30-2017, 07:22 PM
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Goes in and out of park as in " the car won't move when pushed" or the shifter goes in to park? Trans output flanges tend to wear the splines out leaving the car motionless.

Disconnect a cooler line and direct both ends into a pan, start the engine briefly to see if any fluid comes out.

If you flat towed the car without removing the driveshaft, this transmission is now really broken. ( no oil flow through the gear train , planetaries spinning to extreme speeds never seen in normal operation. )
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  #12  
Old 01-30-2017, 11:10 PM
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The car goes into park, i.e. it does not move when the shifter is in P. When anything else is selected the car is in neutral. There were no noises. However, there was a whirring noise for a few months when the car was idling in Park. I imagine this has something to do with the torque converter.

I towed on a flatbed trailer rented from U-Haul so I did not have to pull the driveshaft. I would never flat tow a rear wheel drive vehicle that has an auto transmission.
I will be pulling the tranny lines to test for pressure when the snow and cold subsides a little here in Grand Rapids.
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  #13  
Old 01-30-2017, 11:29 PM
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B2 band or piston.
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  #14  
Old 01-30-2017, 11:38 PM
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Wouldn't here be some major flaring or slipping before the B2 failed?
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  #15  
Old 01-31-2017, 12:34 AM
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Otto I had the exact symtoms and no forewarning what so ever. Was on a trip stopped somewhere when I went to leave car would not move front or back trailered it 700 miles home checked to see if it was pumping fluid it was. Knew then it was tranmission shop time. Sorry I can't give you better news.

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