![]() Problem: The engine idles roughly, and you hear occasional backfiring noises. Additionally, check for any vacuum leaks or clogged air filters, as they can affect idling performance. Also, clean the throttle body to ensure smooth airflow. Inspect the IACV and clean or replace it if necessary. Solution: Irregular idling can be caused by a malfunctioning idle air control valve (IACV) or a dirty throttle body. Problem: The car is experiencing irregular idling or stalls while idling. It’s also a good idea to perform a compression test and check for any vacuum leaks. If the issue persists, consider having the fuel injectors cleaned or replaced. Start by checking and replacing any worn-out spark plugs or ignition coils. The A341F is an A340F with locking/unlocking transfer case differential to allow an AWD mode on the Sequoia.Solution: Engine misfires can be caused by various factors, such as faulty spark plugs, ignition coils, or fuel injectors. Number of disc B3 is changed from 6 to 5 in 2005. Gear ratios are the same, but a shorter 3.133 final drive ratio is used.Ĥ Speed Transaxle A245E was based on the A240E used in the 1989 MR2, but was reduced in size and weight. Variant of the AA80E used for the AWD Lexus LS460. The torque converter can lockup from 2nd to 6th gears. The IS F and LS 460 (with sport package) use Sport Direct Shift (SPDS) which allows for faster shift times. Shift times are as low as 350 milliseconds or 41% faster than the previous LS 430’s six-speed auto. Aluminum has also replaced steel on gear tooth surfaces. With new micro-laser technology gear tooth production tolerances have been reduced 50%. The aluminum die-cast case is 10% lighter, yet 30% more rigid, even with two additional gears and a 22% greater torque capacity the new transmission weighs 95 kg or 10% more than the previous unit. Smaller parts, a hydraulic circuit with fewer components allow the transmission to maintain the same size as the previous LS 430’s unit. The AA80E (Aisin TL-80SN) becomes the world’s first eight-speed automatic transmission. Last digit is the Toyota series number -E=Electronic control -F=Four wheel drive -H=AWD Transverse mount engine -L=Lock-up torque converter Second last digit denotes number of gears. They share much in common with Volvo’s AW7* and Aisin-Warner’s 03-71* transmissions, found in Suzukis, Mitsubishis, and other Asian vehicles.Ī = Aisin Automatic. Toyota’s A family is a family of automatic FWD/RWD/4WD transmissions by Aisin-Warner. Production of the U660E and U660F commenced in January 2006, Toyota’s first 6-speed automatic transaxles for FWD Transaxles feature a compact gear train that achieves six speeds using a single axis to produce a high torque, and are as low cost, compact, and light as 4-speed automatic transaxles. Toyota’ U family is a family of automatic FWD/RWD/4WD transmissions found in later vehicle models. Every transmission is cold and hot tested before shipment. ► Complete road simulation using a dynamometer testing program called C.A.R.S. ![]() ► Complete system correction and recalibration kit installed to address several OE flaws, reduce slippage and increase durability. Modifications include updates to servos, the PR system, and valve body accumulators. ► All-new custom-spec bushings to improve internal fluid flow control and pressures. ► Tru-Flat qualification process applied to transmission case, valve body, pump, and channel plate prevent cross leaks and pressure losses. ![]() ► Bushings and machined surfaces polished to a mirror-like OE finish of 15 RA or less. ► Thoroughly inspected torque converter support bearing to prevent sleeve failure. Upgrades exceed OE requirements and eliminate the possibilities of front seal leaks, premature bushing wear, and vibration. ► Fully remanufactured torque converter is tested for leaks, lock-up, concentricity, and balance. ► Completely remanufactured pump, including replacement of slide pivot pin, provides consistent internal pressures, eliminates pump slide malfunction, and eliminates slipping and/or delayed engagement. ► Fully remanufactured valve body, with updated TCC Control Valve, TCC Regulator Apply Valve, Torque Signal Regulator Valve, and Reverse Boost Valve, improves shifting, lubrication, and performance. ![]()
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