Avoiding 4L60-E harsh shifts and engagements
The complaint The complaints are harsh engagements and shifts. The scan tool data reveals that there is no amperage command to the EPC solenoid therefor the line pressure is at maximum. There are no transmission codes stored, there are lean codes stored in the ECM. The ABS or the VSC (vehicle stability control) lights may
Fixing 4L60-E 1-2 shift issues
The complaint A 1993 Chevrolet 1500 with the 5.0-liter engine and 4L60E transmission has a complaint of second gear starts. The truck seemed to start off in first gear on an initial cold start but would stay in second gear at a stop or even when shifted out of Drive to Park or Reverse and
TF80SC Gen 1 2-3 flared shift
The complaint A 2005 Volvo XC90 equipped with the TF80SC Gen 1 transmission has a complaint of a 2-3 flared shift. During the overhaul process a brand-new valve body from the dealer was installed, only to find on the initial road test that a 2-3 flared shift still existed. The adaption procedures were performed but
Mazda FW6A-EL stored pressure switch codes
The complaint A Mazda with the “Sky Active” FW6A-EL transmission has its Check Engine and A/T Warning lights illuminated, with the following trouble codes stored in TCM memory: P0842 “Oil Pressure Switch #1 (pressure switch B) Stuck On.” P0847 “Oil Pressure Switch #2 (pressure switch A) Stuck On.” P0872 “Oil Pressure Switch #3 (pressure switch
Honda Ridgeline bind up in reverse, forward in neutral
The complaint A 2006 Honda Ridgeline equipped with the BJFA Transmission has a complaint of a bind up in reverse and moves forward in neutral after overhaul. The truck would roll freely with the engine off and the transmission in neutral. Since this complaint occurred after overhaul, the technician thought that a clutch was mechanically
Toyota U660E pressure switch issues
The complaint A 2010 Toyota Venza equipped with the 3.5-liter engine and the U660E transmission has a complaint of setting trouble codes P0872 “TFP Switch C” and P0877 “TFP Switch D.” The pressure switch assembly was ordered from the dealer. As a side note, the car came from a used car dealer. The transmission appeared
Toyota/Lexus U140E suddenly loses reverse
The complaint A 2002 Lexus RX300 with 3.0-liter engine and the A140F AWD Transmission developed a sudden issue: a loss of reverse and no ability to upshift out of first gear. Fault code P0750 “Shift Solenoid SL1 Performance Malfunction” was set. Scan tool data did indicate that the transmission range sensor was operating properly, and
Nissan RE0F11A CVT transmission speed sensor codes, part 2
The complaint All Nissan vehicles using the RE0F11 (CVT7) CVT Transmission may have a complaint of P0715 “Input Speed Sensor A Circuit” stored after overhaul. (They may also have the complaint of P2765 “Input Speed Sensor B Circuit” stored, as seen in our other article). The cause The input speed sensor “A” exciter wheel is
Nissan RE0F11A CVT transmission speed sensor codes, part 1
The complaint All Nissan vehicles using the RE0F11 (JF015E-CVT7) CVT Transmission may have a complaint of P2765 “Input Speed Sensor B Circuit” stored. (They may also have the complaint of P0715 “Input Speed Sensor A Circuit” stored after overhaul, as seen in our other article). The cause The input speed sensor “B” exciter wheel is
Ford 6R60/6R80 Erratic Temperature Operation
The Complaint A 2013 Ford F-150 equipped with the 6R80 Transmission was overhauled and reinstalled back into the vehicle. On the initial road test, the “trans temp” lamp came on. The truck was equipped with a dash-mounted monitor which was set to engine RPM, vehicle speed, engine coolant temperature and transmission temperature. While driving, the
Ford 6R60/6R80 Direct Clutch Drum Assembly
The Complaint When rebuilding a Ford 6R60 or 6R80 transmission, the builder is confused by some published material which may show rebuild procedures on one but not the other. The confusion happens when rebuilding the direct drum due to this conflicting information. The Cause The 6R60 direct drum is assembled differently than the 6R80 drum.
Ford 6R60/6R80 Overdrive Drum and Front Planet Compatibility
The Complaint Soon after overhaul, a Ford 6R60/6R80 Transmission starts to develop a variety of operational issues. A pan drop reveals metal shavings suspended in the fluid. Upon disassembly of the transmission, the overdrive drum and the forward planet exhibit damage to their mating surfaces. The Cause Sometime during the 2008 model year these two
