June 2004 Issue - Transmission Digest

June 2004 Issue

Issue Summary: Some 1997-2002 vehicles equipped with the 4T40-E or 4T45-E transaxle may exhibit harsh engagements and/or harsh upshifts and may have trouble codes PO112, PO113, P1111 and/or P1112. Since the introduction of the THM 4T40-E transaxle in 1995, there have been three different design levels of the accumulator springs and their locations. Some 2003-model THM 4T65-E transaxles come equipped with a newly designed input and third pawl-clutch assembly instead of the previous-design input and third sprag clutch. Beginning in June 2002 Hydra-matic changed the design of the oil-pump assembly on 2002 and 2003 models of the 4T65-E transaxle.

GM 6T70/75 slips and delays in first

A 2015 Chevrolet Equinox equipped with the 3.6-liter engine and 6T75 transmission has complaints of a delayed engagement into drive and slips in first gear.

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The complaint

A 2015 Chevrolet Equinox equipped with the 3.6-liter engine and GM 6T75 transmission has complaints of a delayed engagement into drive and slips in first gear.

The cause

A generation one 1-2-3-4 Clutch Apply Piston was installed into a generation two transmission. The generation two 1-2-3-4 Clutch Apply Piston apply fingers are .147 in. taller than the generation one piston. This created too much clutch clearance for the clutch pack to effectively hold.

How to fix GM 6T70/Ford 6F50 rattling noise with transmission in gear

A rattling noise is coming from the transmission whenever the engine is running and the transmission is in gear.

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Mercedes-Benz 722.9 no forward movement after overhaul

The complaint A 2007 Mercedes-Benz CLS550 with the 722.9 transmission has an after-overhaul complaint of no forward movement. Related Articles – GM 9T series: Critical wear areas, vacuum test locations – Solving a 4L60E acceleration shudder puzzle – 10R80 aches and pains: Unintentional park hold The cause The B2 Brake Housing inner apply piston was

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Land Rover LR3 ZF6HP26 no start after overhaul

The complaint A 2006 Land Rover LR3 equipped with the ZF6HP26 transmission has a post-overhaul complaint of a no-start condition. Part of the transmission overhaul process included the replacement of the mechatronic unit. Related Articles – Shift Pointers: A 10R140 with a classic drivability complaint – 6R80 whirring noise: TCC slip or engine surge? –

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Infiniti G37 RE7R01A chassis codes set

The complaint A 2013 Infiniti G37 equipped with the RE7R01A transmission and the EXT13C transfer case has a complaint of trouble codes C1204 “4WD Solenoid Malfunction” and C1105 “Right Rear Wheel Speed Sensor Fault” stored. Due to extensive damage, the transfer case was replaced, which did not eliminate the stored codes. The shop then replaced

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Other Posts
Honda Accord BB7A six-speed: P2720 code set after collision

The complaint A 2015 Honda Accord with a 3.5-liter engine and the BB7A six-speed transmission (seen in figure 1, above), was involved in a minor collision to the left front of the vehicle. The vehicle was drivable and was taken to the transmission shop. Vehicle diagnostics revealed a P2720 “Pressure Control Solenoid D Voltage Low”

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42RLE buzzing noise on initial engagement

The complaint A 2005 Jeep Wrangler equipped with the 42RLE transmission had a buzzing noise when the shift selector was moved to the drive position. The vehicle was actually brought in with a shift complaint, at which time the owner of the vehicle also said that the buzzing noise was present since he purchased the

62TE delayed forward engagement

The complaint A 2016 Dodge Journey with the 62TE transmission had a complaint of delayed forward engagement and fluid leaking out of the vent when the transmission is placed in drive only. A code P0740 “Torque Converter Clutch Malfunction” was set. Related Articles – The powertrain aftermarket: Growing and global – Shop Profile: AAction Transmissions

Ford 6F35 harsh forward re-engagement after stop/start

The complaint A 2014 to 2016 Ford Escape equipped with the 6F35 transmission built on or before Feb. 26, 2016, may have a complaint of a harsh forward or reverse engagement after an active stop/start event. The Malfunction Indicator Lamp may be illuminated and diagnostic trouble code P0C27 “Auxiliary Transmission Fluid Pump Motor Current Low”

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