This ensures that whether you have a newly re-built unit, or a unit that has been in service for years, all the parts are there and correct for proper operation. When looking at the kit you may be wondering why we included a new solenoid and pressure switch. The reason being is that GM used a variety of ways to engage the lock up depending on what the engineers were trying to achieve. Each method uses slightly different wiring options on the solenoid or different pressure switches.
Even if you have a brand new rebuilt transmission we encourage you to install the entire kit to ensure that it functions exactly as we have designed it.
Regardless of how you are finalizing the installation of your transmission it is critical that you have some way of turning your lock up on and off. Neglecting this part of the transmission will result in poor performance and overheating conditions.
You can give us a call at or order online using this link. This power moves from the prime mover such as an internal combustion engine before it gets to the load. It can, therefore, be said that the torque converter creates a connection between the power source and the load in an automatic transmission. This component is also connected to the flexplate directly, and the latter connects directly to the crankshaft.
A torque converter has the major characteristic of multiplying torque if the output rotational speed is low. The early designs of the torque converter caused an RPM slippage of fluid between its turbine and impeller.
When that happens, there is often a disturbance in the oil and this turbulence leads to the generation of heat. Automakers began to use air vanes positioned outside the torque converter in a bid to reduce the heat and cool the oil. Nonetheless, this structure was used in small vehicles and it showed very little success. The oil was moved through the transmission cooler just to reduce the heat, but at the expense of energy and fuel being wasted.
Lockup torque converters are a type of converter that has a clutch. The engagement of this clutch causes the engine to lock to the transmission input shaft thereby leading to a direct drive ratio.
A lockup torque converter is used since it offers fuel economy, enabling you to use fuel minimally while on that joy ride.
Lockup torque converters gained popularity when it was discovered that manual transmissions are more fuel-efficient than automatic transmissions. For this reason, it earned automatics the name slushbox at the time. On the other hand, car manufacturers had to meet fuel economy targets set by the government. Accordingly, automatic transmissions were made to have an overdrive which helps to improve fuel economy.
And this overdrive enabled the engine to turn while in lower RPM as the vehicle accelerates at a fast speed. As the torque converter slipped, it generated heat, which could potentially affect the converter and transmission negatively.
This heat also impacted on fuel economy, thereby overriding the purpose the overdrive was used in the first place. Accordingly, a lock-up of the converter helped to curb this slippage, and at the same time reduce heat and improve fuel economy. The operation of the lockup converter is a bit complicated but one can still gain an understanding of it.
The engagement of the lockup clutch causes the fluid in the converter to rotate and at a speed similar to other components of the converter. This action opens the passage leading from the pulse width modulated pressure control solenoid to the torque converter's clutch. This variable pressure softens clutch application.
PWM provides for a better feel by gradually increasing the duty cycle for a partial or a smooth to full clutch application. Study Tips Feedback. You may also have a look at maintenance tips when better transmission speeds are all that you desire and how does a lockup torque converter work. A lock up clutch is engaged as soon as the engine and the transmission run at the same speed approximately.
The speed at which a lockup mechanism automatically activates is about 64 kph. For transmission to lockup, however, some requirements follow. Coolant temperature , lockup threshold speed, cruise control, and gears are some parameters that affect the functionality of lock up converters.
If all the factors have fallen into place and the lock up activates, the impeller and the turbine hook-up. There are some issues related to poor lock up action too, that you must take into consideration.
Before you diagnose any of the problems, understanding the working of lock up torque converters is necessary. This explains the hype around the topic!
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