80*F yesterday and the tranny was shifting fine,
today @ 5 AM and it was 22*F tranny shifted fine engine dead cold.
7:30 AM fourth gear flares/slips engine temp 60*C
7:35 AM tranny shifting fine engine temp 80*C....

What going on!!!

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Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi

Are you running synthetic or regular ATF? I've had problems with regular fluid letting the tranny flare as the engine warms up, switched to synthetic and it hasn't done it since ..much

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http://i106.photobucket.com/albums/m...73378_30-1.jpg

How's the ATF level? You know the proper way to check it yes?

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Whats flaring? None of ours flare anymore now that they are all running synthetic. Thats 5 MB's of various years and models, all proving how good synthetic is in the trans.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Well it was not a flare its a SLIP, RPM raises up fast when its in 4th GEAR, Tranny fluid is Fine, i guess its not synt...

__________________
Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi

If the rpms are rising while its already in 4th when you accelerate....thats not a good sign. Could be dead 4th gear clutch....

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Did it only happen the one time, or is it repeatable?

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1987 W201 190D

Only happned this morning, and so far today no problem, shift's just fine...

__________________
Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi

I'd wait to see if it does it again before getting too concerned. Certainly check the fluid level, and smell it to see if smells burnt. If the trans fluid hasn't been changed in a while, this may be a good signal to do so. I'd use a synthetic, there are some recent threads debating which to use. I don't know about your particular model, but my '87 190D has some temperature switches that change the way vacuum works on the modulator as the car warms up. Could have been something like a glitch in one of the switches and valves, a piece of dirt in a line, etc.

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1987 W201 190D