Quote Originally Posted by ripper View Post
That doesn't sound right for a GQ.
Page 66 of the AT service manual says terminal 22 (torque lock-up) of the TCU should be between 8 and 15 volts when the converter locks, and 1V or less when it's not locked.

The earth strap might still help though.
Hmmmm ... thanks mate ... that in itself may explain the problem. Getting a voltage drop maybe? As I'm sure it was 'measured' with the lockup switch selected and it was only around 5 volts?? Need to confirm this though ...