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Copyright © 2011 ATRA. All Rights Reserved.
Technical Bulletin # 13764R/5R55E/5R55W/S/NHydraulic Cooler Bypass SystemsFordApril, 2011
4R/5R55E/5R55W/S/NHydraulic Cooler Bypass SystemsSome technicians may be confused as to how the hydraulic cooler bypass systems works on some Ford transmissions. There have been times when the thermal element or fluid cooler bypass sleeve may stick and cause internal components to fail without setting any temperature related codes. This same problem may also cause an intermittent lockup code P0741. Some aftermarket reprogramming kits may supply a block to keep the fluid cooler bypass stroked in the normal temperature position.
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