![]() Wrong readings from a faulty tachometer (which measures RPM), throttle position sensor and vehicle speed sensor can cause the transmission control module to shift gears at the wrong time. ![]() It’s often due to faulty sensors readings. With the E4OD transmission, electrical problems are often the main culprit behind erratic shifting behavior. While the E4OD and 4R100 transmissions are strong and built to handle heavy loads, there are some common problems that could affect and interfere with its operation. Potential Problems with the E4OD and 4R100 transmissions A gradual application of the Torque Converter Clutch can slip it and smoothly control the vibrations from the engine. This more precise and controlled engagement of the TCC leads to better fuel economy and improved efficiency.īy using PWM, the clutch slip can also be controlled. This on and off engagement, helps regulates the pressure in the Torque Converter Clutch hydraulic circuit, allowing gradually application of the TCC. This addition of a solenoid which can be controlled by Pulse Width Modulation (PWM) allows the Torque Converter Clutch (TCC) to be turned on and off multiple times per second. Some models of the 4R100 transmission come with a PWM torque converter clutch solenoid. The 4R100 transmission built upon the design of the E4OD transmission, and came with stronger and improved internal components, which allowed it to be mated to a 7.3L diesel engine which has a higher torque output. ![]() It can be precisely configured and operated to shift at the right time with the use of a transmission controller like the COMPUSHIFT. ![]() The main strengths of the E4OD and the 4R100 transmission are their capacity to handle heavy duty applications and their long-lasting durability if maintained properly.Īs the E4OD was the first electronically controlled transmission. Strengths of the E4OD and 4R100 transmissions The COMPUSHIFT 4R100 / E4OD transmission controller allows you to customize a shift strategy that works best to leverage the gear ratios of this transmission. The E4OD and 4R100 transmission have the exact same gear ratios, with the 4th gear being the overdrive gear. It was more durable, could handle a higher torque rating, and solved some of the electronic issues that affected the E4OD transmission. In 1999, the 4R100 transmission was introduced as the successor to the E4OD transmission. Shifts are done electronically with solenoids and fluid pressure control systems which engage the optimum gear based on the input from a transmission controller. The newly introduced electronic shift controls include the use of a standalone transmission control module. A lower engine speed also results in less engine wear over time and a quieter drive on the highway. It improves overall performance and leads to better fuel economy. This is because the transmission ratio makes the output shaft spin faster than the input shaft from the engine. The extra overdrive gear allows the vehicle to achieve a higher cruising speed with a lower engine speed. The advantages to these updates were numerous. The E4OD transmission was introduced in 1989 and was based on the core components from the hugely popular Ford C6 transmission, which had started to feature an overdrive gearset and electronic shift controls. They are both very similar in design with the 4R100 transmission being the newer and improved version of the E4OD transmission. ![]() The transmission was designed and built by Ford to fit a variety of their heavy-duty diesel vehicles such as the popular F-series trucks.īoth these transmissions are electronically controlled 4-speed automatic overdrive transmissions so are suitable for use with a 4R100 / E4OD transmission controller. IntroductionĪ Ford 4R100 / E4OD transmission controller can control this heavy duty automatic transmission made by the Ford Motor Company. Using the COMPUSHIFT 4R100 / E4OD Transmission Controller with the Ford 4R100 / E4OD Transmission. ![]()
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