You say it doesn't lock up in 3rd? I know other brands do - does ours not lock up in 3rd?
I am saying it does. Tq lock up can happen in all gears except 1st.. But What I was saying in 4th, due to it being the highest gear it will be more to prone to unlocking to get more power than if you kept it in 4th and kept the rpms and speed in safe zone.
Please show me where the 42le locks in 3rd. Books about this seem to show partial emcc in 4th only for any LH of any year. And full emcc in 4th only.
Taken from 1994 FSM Page 21-2
The 42LE transaxle provides forward ratios of
2.84, 1.57, 1.00, and 0.69. The torque converter
clutch is available in 2nd, direct, or overdrive gear.
The Reverse ratio is 2.21. The shift lever is conventional
with six positions (P, R, N, OD, 3, and L).
When OD is selected the transaxle shifts normally
through all four speeds with the torque converter
clutch operational in third and overdrive; this position
is recommended for most driving. The 3 position
is tailored for use in hilly or mountainous driving.
When 3 is selected, the transmission uses only 1st,
2nd, and direct gears with 2nd-direct shift delayed to
40 mph or greater. When operating in 3 or L positions
torque converter clutch application occurs in
direct gear. This improves transmission cooling
when towing trailers and/or driving on steep grades.
If high engine coolant temperature occurs, the
torque converter clutch will also engage in 2nd gear.
The L position provides maximum engine braking
for descending steep grades. Unlike most current
transaxles, upshifts are provided to 2nd or direct
gear at peak engine speeds if the accelerator is depressed.
This provides engine over-speed protection
and maximum performance.
I also know it locks up by how the engine,speed, and acceleration feel. When disengaged the rpms will move alot more than will locked up. You can feel a more connected feeling during Tq converter lockup. The 4th gear Tq lock up has had many people believe we had 5 gears as well. The ol' Phantom 4th gear.
Also, the Prowler TCM kept the TQ locked up alot more than the standard LH TCM does as well.
If any more clarification on the operation of the 42le, I do believe Chewie has the actual FSM for the Transaxle.