I just changed my front pads and rotors on my 1983 300td. Went out for a test run and worked the brakes. After one particularly hard stop from 35 down to about 5 mph I released the brake and got back on the accelerator and ....uh-oh.....the motor revs but I go nowhere! I came to a stop and shut it off. I collected my thoughts, started her back up, went into D and .....nothing. A whizzing noise ZZZZZZZZZZZ. Put it in park and the wizz noised changed. Ran through the gears PRDS2 and back to park. The wizz slowed down. Went back to D and the tranny caught and I drove off shifting fine through all 4 gears.
I figured I should try another stop to see if I could replicate it and I did.Same problem after a moderate stop. Got it going again the same way and I pulled into a service center. I smelled burnt clutches or fluid, you all know that nasty smell. Fluid level looks good, and it is red.
What happened? It drove fine after that for the 5 miles home but I seemed to notice a driveline growl at around 50 mph, 2100 rpm, right were it locks.

Any ideas? I won't drive it again until I know it is safe?

Thanks

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83 300td 207,XXX

Possible cause:

Broken plastic clip on the rod that actuates the shift modulator valve on top the injektion pump...and. of course, check the fluid level....

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

It sounds like something shifted out of position.

I would also inspect:
* Engine mounts.
* Transmission mount.
* Shift linkage bushings.
* Bowden cable and bracket.
* Plugged transmission filter ?

.

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1983 300D
1984 190D
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Thanks Roy! Indeed the motor and transmission have shifted. Upon inspection I found the tail of the transmission shifted +- 3/4 of an inch toward the passenger side. I have a transmission mount on its' way, it should be here Monday. Should I change the motor mounts as well? Is this shift an indicator that the motor mounts are weak too?
Can I straighten out the motor and transmission and drive her until Monday without causing damage? What is the recommended way to find center?
Thanks again.

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83 300td 207,XXX

How would a shifting motor or transmission cause the transmission not to engage? There must be some other issue related to the shifting that is causing the problem.

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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

I have a bad shift link bushing. I believe that is the cause. Is it easier to change the bushing while the transmission mount is out?

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83 300td 207,XXX

How exactly is the bad shifter bushing causing the problem? If it wasn't going into D, wouldn't putting it in 2 or L get the transmission in a gear in which it would move? Wouldn't moving the shifter back and forth a little solve the bad bushing problem? I haven't heard of a bad shifter bushing causing the transmission not to engage at all. Perhaps it would.

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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

Missing shifter linkage bushings will prevent the selector lever on the trans from going into the correct positions, leaving it between 2 gears. It's pretty common for worn bushings to cause odd shifting issues. If the bushing is completely gone or badly deteriorated the trans would never be in quite the right place.

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Have you checked the fluid level? Could be it is low and the hard stop sloshed it in the pan so the pump sucked in air. If low on fluid, the torque converter does not transmit force. Putting it in N will fill the torque converter fast (most cars). That works for my 65 Chrysler which has "morning sickness", meaning the fluid somehow drains out of the torque converter overnight. I used to have to wait a minute in P or D before getting some drive, but later read the "N" trick, and can drive away in 10 sec.

this happened on my 87 vw and a ford taurus i used to drive. might be worth checking into as its the first thing i thought of when i read the OP's post

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1981 NA 300D 310k miles

Replace all of them, it could not shift that much unless the engine mounts are bad/weak.
Start with the transmission mount, then one engine mount at a time.

Remember to disconnect the engine shock BEFORE raising the engine.


.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

The bushings must be replaced, partial shift lever engagement is unacceptable.


.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

I replaced the 2 shifter bushings and the transmission mount but the problem of slipping after a moderate stop still occors. Putting it in neutral gets it going again within seconds. The fluid level appears good and it is red. Smells a little burned so I am going to change the ATF and filter. What more should I look into?
Thanks!

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83 300td 207,XXX

Dumb question I'm sure, but you checked the fluid with the engine running and on perfectly level ground right?

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2004 F150 4.6L -My Daily
2007 Volvo XC70 -Wife's Daily
1998 Ford F150 -Rear ended
1989 J-spec 420SEL -passed onto its new keeper
1982 BMW 733i -fixed and traded for the 420SEL
2003 Volvo V70 5 Speed -scrapped
1997 E290 Turbo Diesel Wagon -traded for above
1992 BMW 525i -traded in
1990 Silver 300TE -hated the M103
1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one
1979 Silver 300D "The Silver Slug" -Sold

Like 5 times over two days. Transmission warm, idling in park on level ground. I have a hard time getting accurate tranny fluid levels. I hope I'm not the only one! So I take multiple readings and when they agree, I take that to be accurate. But I will take another level reading just to put my fears to rest.

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83 300td 207,XXX