Why won't tsmn shift after first starting?

[RMG]

Why does tsmn not want to shift smoothly after first starting 06 6.0L diesel auto tsmn? It'll go screaming for first 100 - 200 yards through gears. After that it seems to do fine. Fluid level ok. Changed fluid & filters. Why is it doing this?

[jesilvas]

It's cold? Gotta let this stuff warm up first

[RMG]

I have been warming up engine anywhere from 5 to 10 minutes. Usually engine will go into fast idle within 5 minutes.

[jesilvas]

But that doesn't warm up the transmission. It does but not a lot. The torque converter will spin in park but not enough to warm the WHOLE thing up. What do you mean screaming?

[badbart]

Mine is like that also when it's cold, like under 40. I have to drive it about 3 miles before the torque convertor will lock up. Then it's fine.

[jesilvas]

Yea but he's got a 5R110. Same idea though, the TC won't lock until the temps are up to a certain place. Best thing to do is drive it easy until then.

[scottm0821]

Should i be concerned that my trans. will be at operating temp before engine temp even gets about the C? Sometimes they warm up almost evenly then sometimes the trans. will still be cold and the engine will almost be at operating temp.

[jesilvas]

Shouldn't be a bad thing

[md18]

Originally Posted by scottm0821

Should i be concerned that my trans. will be at operating temp before engine temp even gets about the C? Sometimes they warm up almost evenly then sometimes the trans. will still be cold and the engine will almost be at operating temp.

That transmission temp gauge is no more than an idiot light. Ince the transmission reaches a certain point it starts moving to the middle, and once its overheating it will all of a sudden move to the yellow. Its not proportional to the actual temperature.

[scottm0821]

ok thats good to know thanks