The Ultradrive is an automatic transmission manufactured by Chrysler beginning in the 1989 model year.
46-508: Initially produced in a single four-speed variant paired with the Mitsubishi (6G72) 3.0-liter engine in vehicles with transverse engines , application was expanded to the Chrysler 3.3- and 3.8-liter V6 engines in 1990 model year Dodge Caravan/Grand Caravan, Plymouth Voyager/Grand Voyager, Chrysler Town & Country, Dodge Dynasty and Chrysler New Yorker. A six-speed variant (62TE) was introduced in
92-497: A crown-curved rather than flat piston head, upright intake ports rather than angled, and a 10.4:1 rather than a 10.0:1 compression ratio . Mitsubishi claimed 30 percent better fuel economy, a 30 percent reduction in emissions, and higher power outputs than diesels. The 3.8-liter 6G75 's output varied from 160 kW (218 PS; 215 hp) and 339 N⋅m (250 lb⋅ft) to 205 kW (279 PS; 275 hp) and 393 N⋅m (290 lb⋅ft) depending on application. The block
138-497: A crown-curved rather than flat piston head, upright intake ports rather than angled, and a 10.4:1 rather than a 10.0:1 compression ratio . Mitsubishi claimed 30 percent better fuel economy, a 30 percent reduction in emissions, and higher power outputs than diesels. The 3.8-liter 6G75 's output varied from 160 kW (218 PS; 215 hp) and 339 N⋅m (250 lb⋅ft) to 205 kW (279 PS; 275 hp) and 393 N⋅m (290 lb⋅ft) depending on application. The block
184-418: A new coded naming convention in the 1990s. This new standard starts with two numbers, the number of gears (4–6) and the torque rating (0–9) plus two or three letters describing the unit. TE: Transverse electronic LE: Longitudinal electronic AE: Transverse electronic all-wheel-drive Differences in bell housing and bolt pattern can be seen between years and platforms (e.g. 2013 Grand Caravan RT platform 62TE
230-418: A pressure sensor and line pressure solenoid were added to the valve body, in addition to the solenoid pack that bolts to the outside of the case. This resulted in an additional harness connector coming through the case near the manual linkage. Applications: The 62TE is a six-speed derivative of the 41TE, first introduced on 2007 Chrysler Sebring models fitted with the 3.5L EGJ V6 . Applications also include
276-442: A service location for diagnosis or repairs. This may have caused perceptions of failure and premature replacement. A major drawback to the "second-gear-only limp mode" was, if second gear was the defective gear, the vehicle would not go forward. The torque converter measured 9.5 in (24 cm) in diameter and was mounted to the flywheel by a flexible drive plate. The transaxle was cooled through an oil-to-water heat exchanger in
322-560: Is a 60-degree V6 and weighs around 155 kg (342 lb). The engine has low-profile cast aluminum heads which help it to fit into compact engine bays, while pent-roof combustion chambers increase efficiency and make room for four valves per cylinder, arranged in a cross-flow pattern with a "tumble" intake port for both strong breathing and low emissions. Spark plugs are centered in the combustion chambers . The intake valves are 33 mm (1.30 in) in diameter while exhaust valves are 29 mm (1.14 in). The SOHC 24 valve version of
368-560: Is a 60-degree V6 and weighs around 155 kg (342 lb). The engine has low-profile cast aluminum heads which help it to fit into compact engine bays, while pent-roof combustion chambers increase efficiency and make room for four valves per cylinder, arranged in a cross-flow pattern with a "tumble" intake port for both strong breathing and low emissions. Spark plugs are centered in the combustion chambers . The intake valves are 33 mm (1.30 in) in diameter while exhaust valves are 29 mm (1.14 in). The SOHC 24 valve version of
414-421: Is a series of V6 piston engines from Mitsubishi Motors . Five displacement variants were produced from 1986 to 2021, with both SOHC and DOHC , naturally aspirated and turbo charged layouts. While MIVEC variable valve timing has also been implemented in some versions the 2.5, 3.0, and 3.5 L versions were also available with gasoline direct injection . This engine has been the flagship powerplant of
460-582: Is added to the transmission, a complete drain, flush and replacement with the correct ATF+4 will be needed. The most common problems (shift stuck-, limp mode-, blocking problems) with the Chrysler Ultradrive transmissions are poor shifting quality and sudden locks into second gear ("limp-home" mode) caused by the transmission computer detecting problems with sensor data. Nine design changes were made in an attempt to fix clutch failure, and four were directed to excessive shifting on hills. After pressure from
506-477: Is not bolt compatible with a 2013 ProMaster VF platform 62TE). The 41TE is a four-speed transmission originally fitted on 1989 Dodge/Plymouth vehicles with the 3.0 L 6G72 V6 . Applications include (but are not limited to) the Dodge Caravan/Grand Caravan, Plymouth Voyager/Grand Voyager, Dodge Shadow, Chrysler LeBaron and Chrysler Sebring (1995–1997). Applications: The 41AE is a variant of
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#1732869950498552-566: The Mitsubishi Pajero Evolution , the output is 209 kW (284 PS; 280 hp) at 6,000 and 324 N⋅m (239 lb⋅ft) at 4,500 rpm. It uses Multi-port fuel injection and uses forged steel connecting rods . The gasoline direct injection version of the 6G74 was launched in April 1997 as the first GDI V6 engine ever produced. It differed from the basic 6G74 in many ways apart from its unique fuel injection system—it had
598-449: The Mitsubishi Pajero Evolution , the output is 209 kW (284 PS; 280 hp) at 6,000 and 324 N⋅m (239 lb⋅ft) at 4,500 rpm. It uses Multi-port fuel injection and uses forged steel connecting rods . The gasoline direct injection version of the 6G74 was launched in April 1997 as the first GDI V6 engine ever produced. It differed from the basic 6G74 in many ways apart from its unique fuel injection system—it had
644-545: The "manual" position—where side-to-side movements towards the + and - icons (or pressing the + and - buttons on column-mounted selectors) made it possible to manually engage the transmission sequentially through all four forward speeds. The computer could override the gear selector to limit maximum engine RPM or prevent selection of a gear too low for vehicle speed. The option was advantageous in certain driving conditions, e.g., slippery roads or mountain driving. There are currently four different types of units. Chrysler switched to
690-588: The 2.5, 3.0, and 3.5 L versions were also available with gasoline direct injection . This engine has been the flagship powerplant of the company except when they briefly built a V8 in 1999–2001. The staple of their high-end sedans, it was given twin-turbos for the Mitsubishi GTO , and became the most powerful car ever built by the company at the time. The 2.0-litre 6G71 model featured SOHC and produced 88 kW (120 PS; 118 hp) at 5,500 rpm and 172 N⋅m (127 lbf⋅ft) at 4,500 rpm. It
736-548: The 2007 model year and remains in production for several models as of 2019. The Ultradrive and succeeding transmissions are produced at the Kokomo Transmission plant in Kokomo, Indiana , which also manufactures other Chrysler automatic transmissions. As of 2020, Dodge Journeys equipped with four-cylinder engines are the only applications of the four-speed Ultradrive (40TES) remaining in production. The Ram Promaster will be
782-500: The 41TE that was originally used for the all-wheel drive variants of the minivans, and was also used for the Chrysler Pacifica from its 2004-model-year introduction until the model was discontinued in 2008. Applications: Since 2003 (2004 model year), the 41TE was replaced by a similar but cheaper and lighter 40TE transmissions in cars equipped with inline-four-cylinder, or naturally-aspirated engines. Applications: The 42LE
828-519: The 41TE, which were first introduced with the 2007 Chrysler Sebring . The 40TES is used with the 2.4 L GEMA I4 engine while the 41TES is used with the 2.7 L EER V6 . The difference between the TES and TE is the TES has a shallower bell housing and the torque converter is more compact. This was done for the revised packaging of the 2007 Sebring's engine compartment. The 40TES and 41TES are also known As VLP, (Variable Line Pressure) Transmissions:
874-518: The 6G72 uses these same cylinder heads. A toothed timing belt is used. The output of 6G73 is 163 PS (120 kW; 161 hp) at 5,900 rpm with 221 N⋅m (163 lb⋅ft) of torque at 4,350 rpm. The 3.5-litre 6G74 is a 24-valve unit available with either SOHC, DOHC, or MIVEC DOHC. Output for the SOHC version varies from 139 kW (189 PS; 186 hp) at 4,750 rpm with 306 N⋅m (226 lb⋅ft) of torque at 3,750 rpm in
920-471: The 6G72 uses these same cylinder heads. A toothed timing belt is used. The output of 6G73 is 163 PS (120 kW; 161 hp) at 5,900 rpm with 221 N⋅m (163 lb⋅ft) of torque at 4,350 rpm. The 3.5-litre 6G74 is a 24-valve unit available with either SOHC, DOHC, or MIVEC DOHC. Output for the SOHC version varies from 139 kW (189 PS; 186 hp) at 4,750 rpm with 306 N⋅m (226 lb⋅ft) of torque at 3,750 rpm in
966-474: The MIVEC engine, output was 273 PS (201 kW; 269 hp) at 6000 rpm and 304 N⋅m (224 lb⋅ft) at 4500 rpm. The SOHC 12-valve for the second generation of Pajero could produce up to 109 kW (148 PS; 146 hp) and 235 N⋅m (173 lb⋅ft), whereas the SOHC 24-valve could produce up to 133 kW (181 PS; 178 hp) and 255 N⋅m (188 lb⋅ft). The DOHC 24-valve
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#17328699504981012-426: The MIVEC engine, output was 273 PS (201 kW; 269 hp) at 6000 rpm and 304 N⋅m (224 lb⋅ft) at 4500 rpm. The SOHC 12-valve for the second generation of Pajero could produce up to 109 kW (148 PS; 146 hp) and 235 N⋅m (173 lb⋅ft), whereas the SOHC 24-valve could produce up to 133 kW (181 PS; 178 hp) and 255 N⋅m (188 lb⋅ft). The DOHC 24-valve
1058-728: The Pacifica crossover (4.0L), the RT Platform minivans (3.8L & 4.0L V6; also 2.8L diesel for Europe) and the Dodge Journey (3.5L & 3.6L). Applications: Many problems with Chrysler automatic transmissions are started when the automatic transmission fluid or "ATF" is replaced or topped-up with standard, more common fluids like DEXRON or MERCON type fluids. Chrysler transmissions need to use their own fluid, designated as ATF+4 Synthetic type 9602 fluid from Chrysler, not any other or any other plus an additive. If any quantity of other type of fluid
1104-577: The Pajero to the highest output of 164 kW (223 PS; 220 hp) at 5,250 rpm with 318 N⋅m (235 lb⋅ft) of torque at 4,500 rpm in the Australian-made Magna Sports, VR-X and Verada GTV/GTVi and 180 kW (245 PS; 241 hp) at 5,500 rpm with 333 N⋅m (246 lb⋅ft) of torque at 4,000 rpm in the Magna Ralliart . For the MIVEC, only available in
1150-401: The Pajero to the highest output of 164 kW (223 PS; 220 hp) at 5,250 rpm with 318 N⋅m (235 lb⋅ft) of torque at 4,500 rpm in the Australian-made Magna Sports, VR-X and Verada GTV/GTVi and 180 kW (245 PS; 241 hp) at 5,500 rpm with 333 N⋅m (246 lb⋅ft) of torque at 4,000 rpm in the Magna Ralliart . For the MIVEC, only available in
1196-463: The US Center for Auto Safety, Consumer Reports, and others, Chrysler LLC promised to waive the $ 100 deductible in the warranty, provide loaners, and buy back any cars with Ultradrives that could not be fixed (US located cars only). Chrysler ran a campaign to contact all American owners of cars with Ultradrives to find and fix problems. Mitsubishi 6G7 engine The 6G7 series or Cyclone V6 engine
1242-540: The Ultradrive transmission had numerous issues, reportedly due to being rushed into production, a common problem was not necessarily caused by a design flaw, but by poor labelling: both owner's manuals and transmission fluid dipsticks advocated the use of Dexron transmission fluid in the event the required fluid was not available. The transmissions were designed to use a special fluid (Type 7176, also known as ATF+3, now superseded by ATF+4 ) and many owners reported failures from
1288-496: The V6 having its own independent turbocharger and intercooler. Turbochargers were built by Mitsubishi. The 2.5-litre 6G73 is a 24-valve SOHC design with two valves running off a single cam lobe on the exhaust valves using a forked rocker arm and each intake valve actuated with two cam lobes, with a smaller bore than the 3.0L version of the same block. Bore and stroke are 83.5 mm × 76 mm (3.29 in × 2.99 in); it
1334-451: The V6 having its own independent turbocharger and intercooler. Turbochargers were built by Mitsubishi. The 2.5-litre 6G73 is a 24-valve SOHC design with two valves running off a single cam lobe on the exhaust valves using a forked rocker arm and each intake valve actuated with two cam lobes, with a smaller bore than the 3.0L version of the same block. Bore and stroke are 83.5 mm × 76 mm (3.29 in × 2.99 in); it
1380-604: The collector tank on the radiator, and/or a standard oil-to-air heat exchanger. There were no bands or mechanical holding devices; ratios were supplied by five different clutch packs. This allowed the transmission to be lightweight and to use fewer moving parts than the three speed it replaced. The 41TE transmission which directly replaced the TorqueFlite had a similar design and could be considered an evolutionary change, but it included different valve bodies, solenoid packs, sensors, and other components to increase reliability. This line
1426-541: The company except when they briefly built a V8 in 1999–2001. The staple of their high-end sedans, it was given twin-turbos for the Mitsubishi GTO , and became the most powerful car ever built by the company at the time. The 2.0-litre 6G71 model featured SOHC and produced 88 kW (120 PS; 118 hp) at 5,500 rpm and 172 N⋅m (127 lbf⋅ft) at 4,500 rpm. It was installed with two valves per cylinder, and used Mitsubishi's ECI-Multi multiple port fuel injection fuel delivery system. The compression ratio
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1472-422: The only vehicle to use an Ultradrive transmission after 2020. The Ultradrive was a significant technological advancement in transmission operation, one of the first electronically controlled automatics. It pioneered many now-common features such as adaptive shifting, wherein the electronic control unit optimizes shifting based on the driving style of the operator. It earned a reputation for being unreliable. While
1518-399: The operator's driving habits controlled by the vehicle's Transmission Control Module (TCM). Contained within the automatic's torque converter is an Electronically Modulated Converter Clutch (EMCC), designed to act as a shock absorber for harsh shifting. 42RLE production ceased in early 2012. Gear Ratios for the 42RLE: Applications: The 40TES and 41TES are upgraded replacement versions of
1564-485: The output shaft of the low/reverse clutch assembly at the rear of the transmission case. Applications: The 42LE was modified in 2003 as the 42RLE , originally for the then-new Jeep Liberty . It is a 42LE transaxle, modified for use in rear-wheel drive vehicles by removing the integral differential and transfer chain. Power flow exits the rear of the transmission. The case has also been modified. By design, it has full-electronic shift control with adaptive memory to learn
1610-541: The supercharged model is 8.0:1. The 6G71 engine was also converted to run on LPG , a version which was only available to the Debonair and mainly intended for commercial ( taxi ) use. The 3.0-litre 6G72 was manufactured in three different models which featured SOHC with 12 valves, SOHC with 24 valves , and DOHC with 24 valves. The latest version was used in the Mitsubishi Eclipse GT and Galant. Output in 2004
1656-426: The supercharged model is 8.0:1. The 6G71 engine was also converted to run on LPG , a version which was only available to the Debonair and mainly intended for commercial ( taxi ) use. The 3.0-litre 6G72 was manufactured in three different models which featured SOHC with 12 valves, SOHC with 24 valves , and DOHC with 24 valves. The latest version was used in the Mitsubishi Eclipse GT and Galant. Output in 2004
1702-450: The use of Dexron, as well as temporary issues which were resolved when the proper fluid was added. There may also have been mistaken impressions of failure due to the "limp home" feature. When the computer sensed a problem, such as a sensor giving an inappropriate reading, a code would be stored in the car's computer and the transmission would default to second gear only, under transmission computer control, so that owners could still drive to
1748-544: Was 210 hp (157 kW; 213 PS) at 5500 rpm with 278 N⋅m (205 lbf⋅ft) of torque at 4000 rpm. In the older version, used in many Chrysler models since 1987, this V6 was an SOHC 12-valve developing 141 hp (105 kW; 143 PS) at 5000 rpm and 172 lb⋅ft (233 N⋅m) of torque at 3600 rpm. The Mitsubishi models were with a 3.0L 6G72 engine SOHC 24-valve developing 195 hp (145 kW; 198 PS) at 5000 rpm and 205 lb⋅ft (278 N⋅m) of torque at 4000 rpm. For
1794-544: Was 210 hp (157 kW; 213 PS) at 5500 rpm with 278 N⋅m (205 lbf⋅ft) of torque at 4000 rpm. In the older version, used in many Chrysler models since 1987, this V6 was an SOHC 12-valve developing 141 hp (105 kW; 143 PS) at 5000 rpm and 172 lb⋅ft (233 N⋅m) of torque at 3600 rpm. The Mitsubishi models were with a 3.0L 6G72 engine SOHC 24-valve developing 195 hp (145 kW; 198 PS) at 5000 rpm and 205 lb⋅ft (278 N⋅m) of torque at 4000 rpm. For
1840-464: Was 8.9:1. An earlier version, with single-point fuel injection, only had 105 PS (77 kW; 104 hp) at 5,000 rpm and 16.1 kg⋅m (158 N⋅m; 116 lb⋅ft) at 4,000 rpm. A supercharger was installed and exclusive to the Debonair . It produces 150 PS (110 kW; 148 hp) at 5,000 rpm and 221 N⋅m (163 lbf⋅ft) at 3,000 rpm. The compression ratio for
1886-400: Was also given a flash-programmable TCM and, in 2006, a variable line pressure hydraulic system was phased in, which boosted performance and longevity. In some applications, the driver could select a certain gear with an extra position on the stick. Marketed as " Autostick ," activation required the driver to press a safety button on the selector stick, whereby and the selector could be moved to
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1932-462: Was an upgraded version of the 41TE modified for longitudinal engines . It debuted in 1993 on the LH cars . It is strengthened with a reworked final drive unit, barreled axle shafts, and upgraded clutch packs. The major modification to a longitudinal drivetrain while maintaining front wheel drive was accomplished by adding a differential to the transmission case, which was driven by means of a transfer chain from
1978-563: Was installed with two valves per cylinder, and used Mitsubishi's ECI-Multi multiple port fuel injection fuel delivery system. The compression ratio was 8.9:1. An earlier version, with single-point fuel injection, only had 105 PS (77 kW; 104 hp) at 5,000 rpm and 16.1 kg⋅m (158 N⋅m; 116 lb⋅ft) at 4,000 rpm. A supercharger was installed and exclusive to the Debonair . It produces 150 PS (110 kW; 148 hp) at 5,000 rpm and 221 N⋅m (163 lbf⋅ft) at 3,000 rpm. The compression ratio for
2024-675: Was taller than that of the 3.5-liter 6G74. The pistons were high-pressure castings, joined to forged steel connecting rods and a heat-treated, forged steel crankshaft. Intended to be used with 95 RON fuel, lower octane fuels would be detected by the vehicle's knock sensors, and the engine detuned to compensate. Mitsubishi 6G7 engine#6G72 The 6G7 series or Cyclone V6 engine is a series of V6 piston engines from Mitsubishi Motors . Five displacement variants were produced from 1986 to 2021, with both SOHC and DOHC , naturally aspirated and turbo charged layouts. While MIVEC variable valve timing has also been implemented in some versions
2070-487: Was used in the Mitsubishi Debonair, 3000GT, and Dodge Stealth producing 222 hp (166 kW; 225 PS) and 205 lb⋅ft (278 N⋅m) of torque with a 10.0:1 compression ratio in naturally aspirated form, and as much as 320 hp (239 kW; 324 PS) and 315 lb⋅ft (427 N⋅m) of torque in turbocharged form. The turbocharged variant had the lowest compression ratio at 8.0:1, with each bank of
2116-425: Was used in the Mitsubishi Debonair, 3000GT, and Dodge Stealth producing 222 hp (166 kW; 225 PS) and 205 lb⋅ft (278 N⋅m) of torque with a 10.0:1 compression ratio in naturally aspirated form, and as much as 320 hp (239 kW; 324 PS) and 315 lb⋅ft (427 N⋅m) of torque in turbocharged form. The turbocharged variant had the lowest compression ratio at 8.0:1, with each bank of
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