March 2006 Issue
Issue Summary:
A 1996 or later Dodge or Jeep truck using an RE-series RWD transmission behind a gasoline engine can exhibit a chronic code P1763 – “governor pressure sensor volts too high” – causing the PCM to place the transmission into third-gear failsafe.
Shift-solenoid, band-apply and ground-circuit-relay codes are stored in 1990-93 Isuzu Trooper and Rodeo. Shift-solenoid, band-apply and shorted-to-ground or shorted-to-power codes are stored in 1994-95 Isuzu Trooper, Rodeo and Honda Passport, resulting in limp mode.
February 2006 Issue
In This Issue
Chrysler Transmissions: Consistency in Electrical Diagnosis Since 1989 – Part 2
Dodge/Jeep Trucks with 45RFE/545RFE Transmissions: Harsh Shifts
January 2006 Issue
In This Issue
Chrysler Transmissions: Consistency in Electrical Diagnosis Since 1989
December 2005 Issue
Issue Summary:
The RE4RO1A underwent significant changes in many of the internal parts beginning with the 2001 model year.
A Toyota/Lexus vehicle may exhibit shift-feel and drivability complaints after the transmission has been overhauled or replaced.
Failure of the E-clutch piston in ZF 5HP24 (A5S 440Z) transmissions can cause flared 1-2 and 2-3 shifts.
ZF Industries now offers a valve-body reconditioning kit for the ZF 5HP24.
November 2005 Issue
Issue Summary:
Beginning at the start of production for the 1999 model year, the planetary pinions on both carriers in THM 4L80-E transmissions were produced 10%thicker than those in previous models.
In a 1999 Chevy truck with a 6.5-liter diesel engine and 4L80-E transmission, the optical/fuel-temperature sensor was responsible for a complaint of 2-3/3-2 and 3-4/4-3 shift shuttles at cruising speed with 25%or greater throttle opening.
October 2005 Issue
Issue Summary:
Before or after overhaul, vehicles equipped with the Chrysler 46RE may exhibit a recurring diagnostic trouble code P1740 (torque-converter-clutch or over-drive-solenoid performance) or P0740 (torque-converter slip).
Vehicles equipped with the 4F27E may exhibit a neutral condition in 4th gear after the transaxle reaches normal operating temperature.
Changes to the final-drive gears in the Ford 4F27E transaxle, beginning with December 2000 production, resulted in different gear ratios.
After overhaul, a Ford CD4E transaxle may generate code P0741 after the engine reaches operating temperature.
September 2005 Issue
In This Issue
RE4FO4A/V: Harsh Shifting, Code P0745: Nissan Altima, Maxima, Quest; Infiniti G20, I30 Series; Mercury Villager
August 2005 Issue
Issue Summary:
Immediately after overhaul of a 4L80-E and a road test at highway speeds, the vehicle returns to the shop with a total failure of the overdrive planetary gearset.
Immediately after overhaul of a 4L80-E, the engine will stumble or stall completely when the driver places the shifter into overdrive or reverse.
Technicians may have difficulty locating replacement case cooler-line fittings or the small retaining clips for a 4L80-E.
A service kit containing the forward sun gear, #5 bearing and sun-gear shell is now available for the Ford 4R70W.
July 2005 Issue
Issue Summary:
2000 and later Isuzu Trooper and BMW models with the 4L30-E transmission may exhibit diagnostic trouble code P1870 (torque-converter slip) or a shudder on TCC application.
Hyundai’s A4AF3 and A4BF2 units, used in 2000 and later Accent, Elantra and Tiburon, are almost identical to the A4AF1 and A4AF2, but with a few major exceptions.
After rebuild of a Hyundai A4AF3 or A4BF2, there is no forward movement in the Drive range, but reverse and manual low are OK. The transaxle may engage in Drive during high engine speeds, then neutral out and stop operating.
June 2005 Issue
4T65-E
Differences Between GM and Volvo Applications
The 4T65-E transmission is used both in General Motors vehicles beginning in 1997 and in Volvo 80 series starting in 1999. There are several major differences between these units that can cause some problems with parts interchangeability.
May 2005 Issue
Issue Summary:
After overhaul the unit exhibits long, drawn-out shifts when performing under high load or at wide-open throttle.
Before or after overhaul, the transaxle exhibits second-gear starts or shifts out of sequence, even though a scan tool indicates that the computer commands are correct and electrical signals at the transaxle harness connector have been monitored and verified.
A vehicle equipped with the 4T65-E comes in with a complaint of no 3-4 shift at any time.
Some 2003-model 4T65-E transaxles have a newly designed input and third pawl-clutch assembly instead of the previous-design input and third sprag clutch.
April 2005 Issue
In This Issue
The ZF-5HP-24: Preliminary Information
