4r100 rebuilt transmission12/22/2023 ![]() ![]() To address this problem, every SST remanufactured 5R110W transmission features TIG welded pinion pins, which prevents the problem from occurring in the first place. An OE design flaw allowed the gear set pinion shafts to back themselves out of the carrier, resulting in slipping, and harsh or delayed forward/reverse gear engagement. To solve this problem, each SST remanufactured 4R100 transmission gets upgraded (see: Stronger) 1-2 and 2-3 accumulator pistons, a more robust spiral-lock snap ring, and a staked retainer for the intermediate clutch.Ĭommon Problems with the F250 / F350 5R110W Transmission (2003-2010)Ī common 5R110W transmission problem has to do with the low/reverse planetary gear pinions. Leading to no forward gears, or severe slipping in 1st, 2nd, or 3rd gears. Unfortunately, an OE design flaw in the accumulator pistons and snap ring can cause the 4R100 forward clutch drum to fail prematurely. ![]() These are much more resistant to heat and vibrations, which can significantly extend the service life of your Ford F-250 transmission or Ford F-350 transmission.Ĭontrolling hydraulic pressure is the key to creating a durable transmission. To eliminate this problem, every remanufactured 4R100 transmission from Street Smart Transmission receives upgraded EPC solenoids and solenoid clips. Over time, the heat and vibration can short out the wiring on a 4R100 solenoid, leading to delayed shifts, or no shift at all. These little plunger mechanisms route pressurized ATF through the valve body to actuate a shift. Heat and vibration are the natural enemy of car parts, and they're the main cause of premature solenoid failure on the Ford 4R100 transmission. But they aren't without their problems though, so let's look at some of the most common Ford Super Duty transmission problems, and figure out what you can do about them.Ĭommon Problems with the F250 / F350 4R100 Transmission (1999-2004) The 4-speed 4R100 and 5-speed 5R110W were able to handle the monster torque of the Power Stroke Diesel engine, while providing complete civility and impressive fuel economy. Part of that success has to do with the drivetrains, which are unbelievably capable. That all changed when Ford introduced the Super Duty line in 1999, and it's been sitting on top of the sales heap ever since. There was no consideration given to comfort or style, because these trucks were simply designed to do a job. Ford F-250 and F-350 Transmission Problems & Solutionsįor decades, 3/4 ton and 1-ton trucks were just ruggedized versions of the 1/2 ton models. ![]()
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