Transmission Digest, Author at Transmission Digest - Page 61 of 66
February 2005 Issue

Issue Summary:

A 1993 or later Chrysler front-wheel-drive car or van may have a complaint of no speedometer operation and may have all the PRNODL lamps illuminated.

Some 1999-2000 vehicles equipped with the 42RE/46RE may exhibit a harsh engagement in reverse.

A 1996 or later Jeep or Dodge truck with an RE transmission may exhibit complaints of falling out of 4th gear and loss of TCC application. On diesel applications, the transmission may be stuck in 3rd gear and governor pressure may be 70 psi in Park.

January 2005 Issue

Issue Summary:

Some 2000-01 Dodge Ram Vans, Dakota and Ram pickups, and Durango SUVs with 46RE/47RE transmissions may exhibit a flashing Check Engine light, caused by diagnostic trouble code P1740 (torque-converter-clutch or overdrive-solenoid performance fault).

Before and/or after rebuild, vehicles equipped with Chrysler 47RE transmissions may exhibit soft TCC apply or repeated TCC failure.

A previously repaired Ford Motor Co. vehicle with the AX4S/AX4N transaxle may exhibit a feeling of surging with a complaint of engine-speed fluctuation during lockup application, followed by a noticeable “bump” at the end of lockup engagement.

December 2004 Issue

Issue Summary:

Before and/or after overhaul, 1995-2002 vehicles with 4R44E/55E or 5R44E/55E transmissions may exhibit soft or flared shifts, multiple gear-ratio-error codes or solenoid performance codes.

Some vehicles with 4R44E/4R55E/5R55E transmissions may exhibit delayed engagement in reverse and no engine braking in manual low.

Ford or Mazda vehicles with 4F27E or FN4A-EL transaxles may exhibit DTC P0741, torque-converter clutch stuck off, before or after overhaul.

Ford or Mazda vehicles with 4F27E or FN4A-EL transaxles may exhibit delayed forward engagement or premature forward-clutch failure.

Before or after overhaul, Ford vehicles with the 4F27E transaxle may exhibit failure due to lack of lubrication.

November 2004 Issue

Issue Summary:

Some 1996-2003 Ford Explorers, 2003 Lincoln Aviators and 1997-2003 Mercury Mountaineers have “neutral tow” capability.

4R70W units in 2000 & later Ford and Lincoln/Mercury vehicles may have a rattle or clicking sound until the 1-2 shift is completed.

Ford Motor Co. introduced a new rear-drive transmission with the designation 4R70E or 4R75E at the start of production for 2004.

Technicians may have difficulty translating the readings for transmission-fluid temperature, since most scan-tool data for TFT is represented in DC voltage but most manuals show only resistance charts.

October 2004 Issue

Issue Summary:

After overhaul, a 4L30-E in an Isuzu, BMW or Cadillac has no 3-4 shift; shortly thereafter the transmission is in failsafe and a gear-ratio-error code is stored.

A variety of drivability complaints can occur in Daewoo Lanos, Nubira and Leganza after repairs, possibly accompanied by codes including P1336.

In BMW M3, 530i and 320i with the ZF 5-HP-18 transmission, turning of the stator support in the pump cover may cause complaints of no power on takeoff, sudden neutralizing, bind-ups or failsafe.

Not using the factory-specified fluid in ZF automatic transmissions can result in damage to friction elements.

Audi or BMW vehicles equipped with the ZF 5-HP-19FL, ZF 5-HP-19FLA or ZF 5-HP-19 may exhibit a flare on the 2-3 upshift.

Damaged alignment dowel pins can result in damage to the torque converter in BMW 5-HP-18 and 5-HP-30 transmissions.

September 2004 Issue

Beginning with the 1999 model year, Isuzu NPR, GMC Forward Tiltmaster, Chevrolet Forward, Nissan UD and Mitsubishi Fuso trucks no longer use the JR403E Electromatic transmission.

These trucks now are equipped with the Aisin Seiki 450-43LE transmission (see Figure 1), a Toyota-designed transmission that is almost identical to a 1993-94 Toyota Land Cruiser A442F transmission.

August 2004 Issue

Allison World Transmissions are fully computer-controlled transmissions that come in three truck models and four bus models. The model designations are AD, MD and HD, and each is rated for different gross vehicle weights (GVW).

July 2004 Issue

Issue Summary:

Before or after overhaul, vehicles equipped with the 4L30-E transmission may exhibit a binding sensation on take-off in Drive or on the 2-3 upshift.

Hyundai vehicles equipped with the F4A42/51 transaxle may come in with complaints of erratic and/or harsh shifting, third-gear failsafe and one or more codes for open or shorted solenoid circuits.

After overhaul, Mitsubishi vehicles equipped with F4A40 or F4A50 series transaxles may exhibit shuddering engagements or harsh upshifts.

Before or after overhaul, Mitsubishi vehicles equipped with F4A40 or F4A50 series transaxles may exhibit a flared or harsh upshift into third gear.

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.

May 2004 Issue

Beginning at the start of production for some 1999 models, BMW introduced a new five-speed automatic transmission (see Figure 1) that is designed and manufactured by General Motors Powertrain division in Strasbourg, France. This new transmission is designated the A5S 360R in BMW 3-and 5-series applications and the 5L40-E in Cadillac CTS applications.

The 5L40-E transmission is a completely new-design rear-wheel-drive unit and was designed to be a four- or five-speed. The same case and components are used for both applications with the exception of the 2nd clutch and the 2nd sprag clutch, and the use of a smaller Ravigneaux planetary carrier assembly in the four-speed version.

April 2004 Issue

Issue Summary:

The 341E type of valve bodies used in various Toyota, Lexus and Volvo models look alike but are very different and are not interchangeable.

Before or after an overhaul, a vehicle equipped with the RL4FO3A/V transaxle will not upshift after warm-up.

Nissan Quest/Mercury Villager models may exhibit persistent codes for the throttle-position and/or vehicle-speed sensor.

Ford Motor Co. vehicles with the 5R55N/5R55W can experience delayed or no engagement that is more frequent when the transmission is cold.

March 2004 Issue

Issue Summary:

Mitsubishi’s onboard computer system presents transmission-related “P” codes that are misleading, causing needless, unproductive diagnostic routines and repairs.

The A4AF3/A4BF2 transaxles used in Hyundai Accent, Elantra and Tiburon since model year 2000 are nearly identical to the A4AF1/A4AF2 units they replaced but have some differences.

Solenoid locations, connector-pin ID and bench checks are provided for Mitsubishi F4A-41/42/51 series transaxles.

For the 1995-98 Mitsubishi Eclipse non-turbo 2.0-liter with the Chrysler A604 transaxle, you gain diagnostic access through the Chrysler partition of the Snap-on Scanner’s Domestic Primary Cartridge.