Quote:
|
Originally Posted by rdh2
This is a repost of a thread I started awhile ago, but never finished the troubleshooting because of work training and moving.
The Car: 2002 Taurus 3.0L 2V, 140000 miles
The Problem: While driving on a long distance trip, I had a transaxle light flashing along with poor acceleration as I was entering a freeway. The problem cleared itself in 3/4 mile, as there was no place to pull off. Fast forward to today. The car has been parked due to lack of my time. If the gear shift is placed in R, D, or 2, the engine stalls. If it is placed in 1 it does not stall. No check engine or transaxle light is on.
As part of troubleshooting, I disconnected the 9 pin D transaxle connector from the top of the trans. The check engine light and the transaxle light are now on, but the engine does not stall in any gear.
I am certain the TCC is engaged with the connector connected, because of the shudder and the feeling of the trans causing the stall.
I've read the manual, but since I do not have a transmission tester or OBDII scanner available, I'm not able to get far in the troubleshooting.
The solution: This is where the experts on this board can help. Are there any other items I can check at this point? Does this sound like a simple component failure or major trans work?
|
Final update/fixes on the problem.
After much troubleshooting and headbanging
, the transmission causing the engine to stall problem is solved.
It turned out to be a mechanical problem. The pump shaft bearing in the transmission was bad, allowing the shaft to have excess play, which tore the shaft seals. The leaking past the seals bled off enough pressure so the TCC would not release. With the transmission connector disconnected, the EPC line pressure increased enough to prevent stalling, but then of course the trans wouldn't function correctly due to the PCM being disconnected.
By replacing the pump shaft, bearing, and seals, the transmission no longer causes the engine to stall in gear, the shifts are smooth, and I have my Taurus back. A Merry Christmas, indeed.
