The 4l80 is in my tow vehicle,, not a race car. It has performed flawlessly with one exception. I installed a manual convertor lock-up switch on the dash. I use it when pulling a grade. I sometimes downshift to 3rd, lock up and ease up on the gas. All perfect so far.
MSD tech says it should lock up in second gear,, it will but only if the shifter is in drive or OD. If i manually pull the shifter to second the convertor will unlock, in drive it will lock.
I know second sound crazy but i live in Idaho, some mountain roads are steep and winding, 30-40 is all you want to go.
Anyhoo, My guess is something in the wiring but i have no idea where to start. MDS says it should lock up regardless of the shifter position. In first, the convertor will not lock as designed.
If anyone has a guess, it would be appreciated.
There is no reason to settle on just three gears or the kickdown linkage of an automatic transmission with the number of electronically controlled four speed automatics that are available these days. MSD will take the mystery out of setting up or programming an automatic trans with the Atomic...