Operating The Bd Torqloc - BD Diesel Performance 1030395 Installation Manual

22 September 2015 TorqLoc# 1030395 3

Operating the BD TORQLOC

The TorqLoc works off of a lighted 3-position toggle switch and will only take effect
when the vehicle is above a set speed (approximately 25mph to 30mph) and the
torque convertor lock-up clutch is engaged. The lock-up clutch usually engages
when the vehicle is cruising with little throttle action.
On most vehicles, the lock-up clutch can be manually engaged by applying pressure
to the accelerator pedal until lock-up engages, then lift foot off the accelerator.
Accelerator pedal pressure is also required after shifting out of or into overdrive to
reengage the lock-up. The TorqLoc is programmed to disengage the lock-up
clutch once the vehicle's speed drops below a preset speed.
When the 3-Position toggle switch is in the Down (Green light) position, the
TorqLoc module will keep the convertor lock-up clutch engaged when the exhaust
brake valve is activated (brake switch turned on and accelerator pedal at idle
position). (NOTE: The Down position has no operation if the TorqLoc module is
not wired up to an exhaust brake.) The Middle (White light) position is the
off/neutral position for the TorqLoc module. The Up (Red light) position will
manually keep the convertor lock-up clutch engaged.
For proper operation of the Dodge transmission, the lock-up clutch must be
rd
disengaged before the transmission will shift out of overdrive into 3 gear. The
TorqLoc module compensates for this by disengaging the lock-up clutch when the
"O/D" button is activated to turn the overdrive off while the exhaust brake is turned
on. To reactivate the lock-up, apply pressure to the accelerator pedal until lock-up
engages, then lift foot off of the accelerator pedal.
Also with Dodge trucks, to prevent excess slippage with the lock-up clutch, the
turbo boost pressure should be equal to or less than 1psi for every 100 engine rpm
(18psi or less at 1800rpm) when engine rpm is below 1800rpm.
On all vehicles, the transmission should be shifted out of overdrive if speed drops
below 40 mph. If not, there could be a transmission shudder as the vehicle speed
decreases until it reaches the set speed that the TorqLoc unit will allow the torque
convertor lock-up clutch to disengage.
With Dodge trucks, the module has an Overdrive inverter option that will disengage
the Overdrive when the truck starts to move after being started up. This will prevent
possible transmission shudder on trucks with raised horsepower and will allow for
the transmission to lock-up the clutch in third gear before reaching overdrive when
starting to up-shift from a dead stop, allowing cooler fluid temperatures when driving
at "city" speeds. This is an option and does not need to be connected for proper
operation of the TorqLoc module, ignore all references to the "Inverter" if this option
is not desired.
Note: The OD inverter is not compatible with 2005 Dodges. A BD Overdrive Cutout
PN 1031350 may be purchased separately to control OD on a 2005 Dodge
BD Engine Brake Inc.
Plant Address: 33541 MacLure Rd. Abbotsford, BC, Canada V2S 7W2
U.S. Shipping Address: 88-446 Harrison St, Sumas, WA 98295 U.S. Mailing Address: P.O. Box 231, Sumas, WA 98295
Phone: 604-853-6096 | Fax: 604-853-8749 | Internet: www.bd-power.com