Torque converter lockup
Pro
Joined: Apr 2003
Posts: 517
Likes: 0
From: South Lyon Michigan
It won't help driveability. The torque converter lockup is only needed in overdrive when your cruising at higher speeds, all it does is lockup the torque converter so it is essentially straight-drive like a manual car. Having it locked up keeps the rpm's a little lower to save you gas mileage and prevents the torque converter from making so much heat. Unless your in overdrive you won't benefit at all from locking the torque converter up in lower gears. You also shouldn't shift gears while the torque converter is locked up so you would have to turn it on and off, your torque converter automatically locks up after your trans shifts into overdrive and unlocks as soon as it shifts out of overdrive.
Burning Brakes
Joined: Feb 2000
Posts: 1,247
Likes: 2
From: Parker, Colorado, USofA
Stock situation is to lockup the TC above 23 mph...I had a situation where the VSS wasn't putting out a signal and had to wire a switch to temporarily force lockup.
Below a certain speed, it'd jump in an out and just flat not work nicely. (What speed? I dunno! My VSS was dead!)
It made a HUGE difference on the dyno as the lockup permits a TC to be inefficent at upper revvs. Not having the lockup means a LOT of wasted power up top.
Below a certain speed, it'd jump in an out and just flat not work nicely. (What speed? I dunno! My VSS was dead!)
It made a HUGE difference on the dyno as the lockup permits a TC to be inefficent at upper revvs. Not having the lockup means a LOT of wasted power up top.
