Quote:


Also conduct TCC Operation test...
Drive vehicle at highway for approx 15 minutes to bring to operating temperature.
Maintain constant 50 mph and tap brake with left foot.
Engine RPM should increase and then decrease after 5 seconds.
If this doesn't occur refer to Torque Converter Operation concerns.




Just thought I would let you know that I tried this today and got varied results. Yeah I know! It either works or it doesn't, but the first time that I tried it (after driving about 20 miles after the car reached normal operating temp) it did not happen. I tried again right after this and the RPM's rasied about 250 RPMs and then decrease just has you said.

Ok. So thinking that maybe I tried the test too soon, I tried again about 20 minutes later. Same results, the first time I tried it, the RPMs did not raise. I tried again immeditely after and the RPMs raised and then lower as above.

Could it be that I am chasing a intermitent short. Possibly located in the harness that is located under the valve body cover? From looking at pictures of this part in the parts diagrams that I have, it seems that there is a small amount of harness between the solenoid body and the connecter that is mounted on top of the tranny. Only reason I am thinking this, is because it could have been damaged while on the work bench. Possibly something was dropped on the harness and nothing was thought of it at the time. After getting everything back together, the problem rears it's ugly head.

Anyway, since the converter locked (even if the second time) that would mean that mechanically, it is working. The solenoid is just not locking it when it is suppose to, hence the code P0743.

Then again, I could have held the brake too long the first time or something like that.

At any rate, I am going to wait until I get my Ford CD from Todras and get a few good scans with the Vehicle Explorer next month (Thanks tiv!!) and go from there. I think I have made a great deal of progress with all the help you guys have given me. Thanks again!

P.S. After I get a few good scans recorded, would either of you be willing to take a look at them if nothing jumps out at me. I will, of course, throughly go over them myself first and possible start a new thread at that time with my findings. Remember this will be another month away, but just thought I would go ahead and ask now.

Phillip Jackson `98 Mystique LS 262K+ and counting... ATX rebuilt @ 151K "This storm has broken me, my only friend!" RIP Dime