93 atx with shift problems

[sschottsho]

ok something new for me to worry about. yesterday i drove my sho and it was shifting wierd. today my wife went to drive to town and it wouldn't leave 1st gear. i drove it and it wouldn't shift out of 1st. i ran the codes this is what i got. 172,176,327,646,647,648. i drove this vehicle 3 days ago and there was no problems. any help is greatly appreciated. thanks all. steve I NEED INFO AS SOON AS I CAN GET IT

 

[Hank F.]

Any ATX problem should always be first diagnosed by changing the filter and pan gasket with a close inspection of the connections that are visible. If this improves your performance, then try going the full flush route. In my case, and I emphasize that I am an amateur, I have avoided much grief and spent $$$$ by using this method as a baseline diagnostic tool. I also tried something I was always taught not to do, I put in a quart of Lucas ATF treatment. Since I had nothing to lose as I was staring at $2k in rebuild, I figured it cannot hurt. That was 10k miles ago. Again, I must tell you that I could have just been lucky, as I was shooting in the dark. Good Luck.

 

[shoteen95]

How many miles on the transmission? Sounds like an unfortunate case of overhaul time for the tranny.

 

[SHORANGERBIRD]

-have you ran it out of gas lately??? i have been witness to atx shos that run out of gas set codes when they do, because its still tring to run and pull, but the engine shuts off and on, trans going back and forth and the computer thinks something is wrong in the eng. or tranny. put a tester on it, pull the codes, and presto, its back to normal. this happened to my nieces car once. yes its a sho. so there may not be anything wrong with it.....