No doubt that is a hot price. The going rate for one of those in that represented condition is about 7-9k.

I would hold off on the trans computer until you know for a fact that it is bad. How did you determine the transmission actually downshifted, or did you just observe an rpm spike at the moment of failure?

I still maintain that the transmission controller and the engine controller talk to each other and will not allow a downshift that would kill the engine. Failing that I have to think that if somehow it did get in that situation it would have tried to save the engine by cutting the fuel supply by releasing the IP rack to minimum.

I still think you have a runaway condition caused by the engine consuming its own lube oil based on earlier statements.

Not trying to be difficult but just making sure you really get to the root cause of the problem without just throwing parts at it.

The TCM will have to be recoded to match the car, with Star DAS, it's not just a plug and play operation. I suspect this will be several hundred dollars for the part and north of a hundred to pay shop labor to do the recode.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

the trans computer may not be at fault, the mechanical portion of the trans may have jammed, for instance, a bearing or something falling into the planetaries causing a downshift... no?

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I hope someone can chime in on this, Transmisisons are not my strong suit.

__________________
hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

The trans store codes as well as adaptation values that show how it has been adjusting itself internally. I'd check them. Star Diag would be best along with someone who knows how to interpret the data. SDS might pull up an engine code or two also or pending codes.

Seems to me like you need to pull the value cover and/or head and find out what happened? Timing chain tensioner, vacuum pump blew, cam broke, threw rod, trans issues, etc, etc. Could be major, or not. List is endless and to me, without pulling it apart and knowing what you have to work with, you can't know how to proceed.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Both trans and engine codes were pulled there were no pending or other faults found. this is at a shop. I've had them read this car a few times since having it. I trust what they say. the plan is to move the car to storage after a trip I have coming up while I still have the apperatus to move it. (saves on towing) I've gotten a pump for my 300TD. a thread will come soon on the joys and adventure of getting this thing up and running again.

__________________
hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

Engine with 200k in Metro Dallas.

98 99 Mercedes Mercedes E Class 3 0L i6 Engine Diesel Turbo 606 962 W210 | eBay

__________________
06 MB E320 CDI 123k miles
14 Sienna (wife's DD) 36k miles
11 GL350 Bluetec 136k (Sold)
96 E300; 292k+ miles (Donated)
11 Sprinter 22K+ miles (Sold)

Saw this one.... Too high of miles for the price I think. I'd prefer an engine either with Very low miles or no miles. and I'm leaning towards no miles. there is a rebuilder near me who has a few ready to do. comes down to money and my lackthereof

__________________
hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

Update?

Inquiring minds of fellow OM606 owners dying to know the rest of the story...

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech