When performing the test, do NOT hold the accelerator pedal for more than a few seconds - severe transmission damage may occur. Once the engine speed (RPM) reaches an equilibrium state and is no longer increasing (indicating stall speed has been achieved), read the pressure and release the accelerator pedal. The stall speed test requires briefly depressing the accelerator pedal to the full throttle position. If the transmission fails the idle pressure test, do not perform the stall speed test - not only can severe transmission damage ensue, but there is no need to perform the test if any of the selected ranges fail the idle test. The idle pressure test should always precede the stall speed pressure test. The line pressure port is located on the driver side of the transmission just above the lip of the transmission fluid pan and roughly centered between the transmission input and output. Pressure specs are NOT application specific and are applicable to all 4R100 transmissionsĬhecking the line pressure on the 4R100 requires installing a transmission pressure gauge (minimum 300 psi) at the line pressure port. Parts between gas and diesel, F-150 and Super Duty applications may not be interchangeableġ000 lb-ft nominal max input torque capacity.Power take-off (PTO) provisions available on select transmissions in applications with a GVWR greater than 8,500 lbs (various Ford Super Duty).3 planetary gear sets (one for reverse, forward gears, and overdrive).Based on the E4OD platform, a derivative of the original C6, but with no interchangeable parts.Replace transmission fluid and filter every 30,000 miles (MERCON V replaces the now defunct MERCON ATF) The 5R110W TorqShift transmission would eventually replace the 4R100 in the Super Duty, while the 4R70W and 4R75W transmissions would dominate the F-150 platform until the 6R80 was introduced for 2009.ġ000 lb-ft (nominal transmission input torque capacity) ![]() Because of the transmission's relatively high capacity, it found its way into the 5.4L Supercharged F-150 Lightning and Harley Edition models. ![]() The 4R100 was largely introduced because of Ford's need for a heavy duty transmission that could handle the torque output of the evolving 7.3L Power Stroke.
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