Overdrive Transmission Solenoid

SOURCE: towing with automatic in overdrive

YES! The owners manual states explicitly that "O/D Off" should be engaged whenever you are towing, I always ignored it for towing under 3000 lbs. The only way I would try it with our 4R100's is with a 4-5 plate Torque Converter Clutch and a Wood/IPT/BCS/Banks rebuilt unit running a separate cooler. The problem originated when Ford shifted to a Pulse Width Modulated (not just on/off) Torque Converter Clutch solenoid for "smoother" shifting. The increased slip in these clutches resulted in faster wear and higher heat levels... and blown solenoid packs. Another $150 down.
PS. You will not see any change in the tranny temp gage in the dash until the temp is well over 230F... too hot for Mercon! Get an aftermarket gage pod to keep an eye on things.

SOURCE: Where is 2001 Ford Explorer overdrive solenoid

inside the transmission, mounted on the transmission shift control valve body. There are four solenoids located on this valve body, it is difficult to explain which one does what, you can measure each one with an OHM meter, the OHM valve is hard to specify, but there should be an OHM value, it should not be shorted or open, hope this helps, let me know

SOURCE: overdrive light on shifter is flashing and

There is another recall on the cruise control. The first added a fuse. This new recall is about wiring and lighting problems caused by the cruise. Everything from not shifting out of Park to no brake lights to false dash indicators. Best to contact the dealer, if it is a recall its free.

Duane Wong

• 6826 Answers
• Posted on Jul 06, 2010

SOURCE: 2004 f150 transmission fault light

Sounds like the transmission got overheated. I would not worry if shutting it off and restarting got rid of the fault.

Enjoy your vacation.