Won't shift when cold

[paulstopit]

My 1993 Explorer (Automatic) will not shift when cold.
After placing the gear selector in 2nd I can at least drive
35 mph until the car warms up and then the tranny shifts fine.

 

[Alec]

Have you checked the fluid level? How cold are we talking about: anytime the truck is "cold" or when it's cold outside?

 

[paulstopit]

Thanks Alec.

The trans fluid is full.
It is when the car is cold, the outside temperature doesn't seem to matter.

 

[Opera House]

I would suggest two things

1. Change the fluid and filter, 2. Replace the low/reverse servo O-rings. The procedure can be found on this (about the middle post of page 2) thread is located at:

http://www.explorerforum.com/forums/showthread.php?threadid=60887&goto=newpost

There should also be a problem with delayed reverse engagement. This is an easy do it yourself procedure that doesn't require removal of the transmission.

 

[94EBexplorer]

this the origonal tranny..... ? this is also a sign they are going to go...

 

[CHuntMD]

Find a shop with a BG Transmission flush. It replaces ALL 16 quarts of ATF unlike a drain of the pan.

Have them add the BG tranny conditioner.

If that does not help your tranny could be heading south for a permant vacation.

Chris