bad shift when cold

[Grizzly]

I had my tranny rebuilt last year. Since then the tranny doesn´t shift in overdrive when cold (ca. 35°F outside)for the first 5 minutes of driving.
What is wrong?

[06F250FX4]

Most transmissions won't shift into o/d until the trans or engine reach normal operating temp. My car is the same way, and this is what the dealer told me.

[Grizzly]

Originally Posted by 06F250FX4

Most transmissions won't shift into o/d until the trans or engine reach normal operating temp. My car is the same way, and this is what the dealer told me.

Strange! It didn´t do this before .

[ipz2222]

Lock up is tempeture sensitive but not 4th. Not shifting to 4th when cold is usually an engine performance issue. You're pushing on the accelerator more to maintain or reach speed and therefore a later shift.
Make a note of what speed tranny shifts to 4th when warm. Then when you reach that speed cold, lift you foot from the acc pedal about an inch, trans will probably shift. preston

[Grizzly]

Originally Posted by ipz2222

..........
Make a note of what speed tranny shifts to 4th when warm. Then when you reach that speed cold, lift you foot from the acc pedal about an inch, trans will probably shift. preston

Haha! I am quite familiar with that foot lifting from the pedal...
I tell you something: it simply doesn´t work!

[ipz2222]

If it doesn't work, it means you have other problems; sticking shift valves, leaking seals etc; . Preston

[95PDXLT]

my 95 does go into o/d when cold but not lock up untill it hits the C on the temp guage. I'm reassured now after reading this is normal.