Converter back in, still won't lock up...

[WSLN 6]

Aaarrrgh.
TCC would not lock before, and it does not lock now.
What am i missing?

Wiring is good all the way to the tcc solenoid, verified 12volts/ground from manual lockup switch and ecm command.

Removed solenoid and bench tested, 23 ohms, when 12 volts applied, you could notblow through it, worked perfect.

Removed lockup valve and found no foreign material,so i reinstalled it and it moves freely.

Removed torque converter and had the guy who built it cut it apart to inspect.
He found the converter to be perfect, no tell tale signs why it wouldn't lock up.

New gasket/fluid/filter.

Reinstalled torque converter and test drove.

The car acted no different, could not feel it lockup, and when I pressed on the brake at 60mph, the rpms did not raise even a little.

Tried commanding lockup in 2nd and 3rd/4th with my manual switch, but could not feel any engagement.

What am I missing?
Please help me figure this one out!!!!!

 

[MeanBuicks]

I assume you have new o-rings on the input shaft and TCC solenoid?

One way to determine if it's a control problem or a pump/converter problem is this. Remove the TCC valve in the pump and place the springs on the bottom of the valve, holding it in the applied position.

Reassemble everything and crank up the car in NEUTRAL. If the pump/converter are working properly, the car will stall when placed into Reverse or Drive. Your problem lies somewhere in the control circuit, before the TCC valve.

If the car does not stall, the TCC isn't applying and this would point to a problem with the converter or something downstream from the TCC valve in the pump.

Kind of a pain, but this will tell you something.

 

[John Larkin]

Don't feel alone. Last two long runs I've been on, lockup would only occur on the way home, not on the way out. It's almost like a tease. However, this last trip had one difference. When I got out onto the highway, it was revving away and I just let up on the gas and it dropped in. Then all was good. I've checked the wiring from trans electrical connection on the driver side to the brake switch too and it's spec on. When in non-lock, RPMs seem to be around 2300 @ 60mph, when locked, seem to be about 1900 at same speed. I did verify 4 shifts too.