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?

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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.

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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.

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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.

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