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Honda's older transmissions such as the Hondamatic semi-automatic transmission and its successors use traditional, individual gears on parallel axes like a manual transmission, with each gear ratio engaged by a separate hydraulic clutch pack. This design is also noteworthy because it preserves engine braking by eliminating a sprag between first ...
The 9HP is only 0.24 inches (6 mm) longer than, and weighs 16.5 lbs (7.5 kg) less than, the outgoing six-speed transmission. The compact packaging is achieved by using a number of innovative design features: a new compact hydraulic vane-type pump, two patented dog clutches, [3] which replace bulkier conventional clutch packs, and a nested gear set. [2]
The affected cars include certain: 2022-2025 Acura MDX Type-S, 2023-2025 Honda Pilot, and 2021-2025 Acura TLX Type-S vehicles. Dealers are to reprogram the unit for free and notification letters ...
The Honda Pilot is a mid-size crossover SUV with three-row seating manufactured by Honda since 2002. [3] Primarily aimed at the North American market, the Pilot is the largest SUV produced by Honda. Pilots are currently manufactured in Lincoln, Alabama , and the Pilot was produced in Alliston, Ontario until April 2007.
The 4-speed automatic transmission in 1999 to 2001 models had serious problems with transmission durability. Honda spokesman Mike Spencer stated that four-speed models were afflicted with a bad bearing that could break apart, scattering fragments of metal that clogged fluid passageways in the transmission, causing it to shift erratically. [21]
The original Hondamatic, like all following Honda automatics, featured gears on parallel axes rather than planetary gears like most other automatic transmissions. The two gears for each ratio - one driving and the other driven - are in constant mesh and each ratio is engaged by a dedicated clutch connected to one of the ratio's two gears.
Float shifting can reduce clutch wear because it is used so much less (only for starting from a standstill). Conversely, improper engagement of a gear (when the engine and transmission speeds aren't matched) can cause wear on the synchros and lockouts, and damage the gears by physically grinding them together due to a difference in speed.
2008–2012 Honda Accord (B90A 4-cylinder models, B97A V6 models)* 2006–2012 Acura RDX (BWEA) 2004–2007 Saturn Vue (MDRA front wheel drive, MDPA all wheel drive)