1998 Ford Windstar code P0743

HERN615

MEMBER
1998 FORD WINDSTAR
6 CYL
FWD
AUTOMATIC
109,200 MILES

1998 windstar 3.8l - 109200/OD. I had my trans fixed by reputable shop. Prior to this. The check engine light was not on, after I brought it home the check. Lite came on. I found this very odd, so I hooked up my code reader and P0743 came up, which is torque converter electrical conn. I took it back to the shop and they added some kind of liquid and told me to drive it for two weeks, and if the lite did not go off to bring it back, because they might have to replace the converter. They replaced a bunch of parts in the trans. Is there any info that you guys could give me to see if I can fix it myself, or at least help me understand what is going on with the code.
Thanks very much

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

I would probably start by fixing the P0743. The code is for a TCC (Torque Convertor Clutch) solenoid problem.

Chances are pretty good the problem is the wiring where it goes into the transmission or the TCC solenoid itself which is in the valve body

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Saturday, February 16th, 2008 AT 1:56 AM

HERN615

MEMBER
5 POSTS

Thank you very much (ramataz) I appreciiate your response, and I'll be looking into this.
Hern615

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Saturday, February 16th, 2008 AT 6:03 PM

FLEXY5

MECHANIC
512 POSTS

There was a bulliten released from Ford about three years ago about this code being set after trans overhauls. In Ford's program stratagies, the P07xx codes are for computer detected failures due to mechanical responses. The P17xx code series are computer identified electrical failures. This code you are getting gets set when the computer does not see the what it would expect from Torque Converter lock-up. The most common problem for this (and is even stated in the bulliten I mentioned) has to do with a seal on the input shaft of the trans. The seal either gets damaged when the torque converter is installed or it is accidentally left out during the rebuild. There is not much that you personally can do, but at least you can understand how to best procede. If you have any other questions just let us know.

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Saturday, February 16th, 2008 AT 6:30 PM