I have a '99 xlt 4x4 with the 4.0 SOCH. A couple of times this spring the o/d off light started flashing. I took it to my mechanic and he pulled the code:
P0741 - somthing like 'torque converter lockup failed' I can't quite remember what exactly the coed means.
Thing is this hasn't happed again since around March and I also noticed it only came on when driving in the rain.
Is it possible that someting goes wrong when the torque converter gets wet or could it be an electrical connection or something not working right when wet?


Thanks

 

I need to bring this thread back from the dead. (Not that anyone had replied to it).

So I had the problem I posted above last year, and the light started coming on a little more frequently, from once a week too once every two weeks. At the beginning of July I had the transmission fluid flushed and the problem went away Until November. The light came back on in November, and once again in February or March or something.
Now starting around mid May (this year) It started coming on about once a week, and has been getting more frequent, now it seems to be occuring once a day. I can drive to work in the morning (30-40 min drive) without the light coming on, but then coming home in the afternoon it will turn on. I'll usually pull over (depending on how close I am to home) shut the truck off and restart it to clear the tranny from 'limp home' mode and it doesn't come back for the rest of the day.

Today driving home the light came on on me twice during my drive home. I stoped in at my mechanics and had the codes pulled and it was the same code P0741 (Torque Converter Stuck off) as before.

Driving wise it seems to shift fine, but I did notice the torque converter lock up kinda early once ( I think I was doing between 50 to 60 km/h).

Searching aroud here it looks like it may be the lock-up solonoid or the valve body. Why would a fluid change fix the problem for a while only to have it come back though?

I'm waiting for my Ford Service CD to arrive before I try to actually look at the truck.
Any help or suggestions in narowing down the problem would be greatly appreciated.

 

I Had A Similar Problem In An E4od Trans. The Problem Was Excessive Convertor Slippage And The Convertor Had To Be Relaced.