Hi mate. Yep I've had a similar problem. My lock up was engaging and disengaging rapidly on the hwy. While yours sounds to be not engaging at all. I replaced the TPS, torque converter, fitted an aftermarket valvebody. Last thing I did was replace the temp sensor and it was fixed bit only for a month. I only used a second hand temp sensor so I'm hoping that by replacing with a new one it will be fixed. I'm currently waiting for the new temp sensor to arrive.
Theres a bit of info regarding this around the forum. Also you could look st my thread in members rides "tasLucas's tb42 ti"
Ps. Keep the auto, they are WAY BETTER FOR 4WDING.
tappn it
Reply With Quote