Emergency

[paperjam]

I have a 92 X with an auto tranny. Tonight when I pulled up to a redlight my X died. I put it in park and it fired up. I put it in gear and it died. I figured out if I give it a little gas when I take off it will go. It sounds as though it is in 3rd or 4th gear. As long as I am moving the X shifts fine. When I am slowing down it feels like you are using a manual shift and you forget to push the clutch. I drove it about 50 miles this way, on the interstate and it drives and passes good. (passing gear works) I didn't mean to sound to wordy.... just trying to explain in detail.

 

[Chew_12]

Well if you car is stalling then it probably doesnt have anything to do with the tranny. Although the tranny could be another problem. It kinda sounds like you are getting too much gas, or not enough air in your engine. Clean your MAF and make sure your air filter is clean.

 

[MrShorty]

Sounds like torque converter lockup clutch (TCC) is sticking on. Probably needs a good cleaning of the valve body.

 

[paperjam]

How would I go about cleaning it? And where is it located?

The air fuel mixture is good. It idles smooth in P or N.

 

[MrShorty]

I found an interesting TSB while perusing my transmission manual (in anticipation of some tranny work of my own). Ford TSB # is 92-5-12 and applies to all A4LD's built after 21 August 1991. The text seems poorly written, so I didn't quite understand (I don't know if there is a more complete text elsewhere or if it's poorly written from Ford). It refers to a spring in the transmission case fluid passage feed to converter lockup valve. I infer from the write-up that this spring collects debris which, somehow or another, causes the lockup valve to stick --> the lockup clutch doesn't let go, and the engine stalls when you stop.
Valve body is located just inside the transmission pan (the transmission filter bolts to the underside of the valve body). If you want to tackle this yourself, be sure to get a good transmission repair manual. There are several little details that you can mess up if you don't have the proper documentation.