The shifter knob would come up out of the console and allow the driver to move it from Park to Drive once, then freeze in the Drive position.
Complaint: A vehicle equipped with a 4XRE Series Transmission stopped moving suddenly soon after overhaul. Since an unmodified 4XRE valve body does not charge the torque converter in Park, the fluid level was check in the Neutral position, it was over full. The technician then removed the return cooler line to check for cooler flow
Most seasoned techs have several quick diagnostic steps they take when faced with a transmission malfunction. The type of problem and transmission determines which steps to take. For example, a “no-move” condition. If it is a fresh install, the most obvious diagnostic step is to know how much fluid it took. If it only sucked
Little did the owner of a 2005 Acura MDX know that at the time the transmission in his vehicle was being repaired that it was the start of a long uphill battle. The vehicle initially was towed into a shop for inspection due to a no-movement condition. In addition, the check-engine light was on indicating the presence of trouble codes, several of which were verified on a scanner.
I have always loved the challenge of working on those “puzzlers.” So, when one came to my bench recently I knew I would definitely take the challenge.
This was the day the 1996 Lexus GS300 with an A350E transmission came as a tow-in with no movement.
The transmission rebuilder accused the R&R man of breaking the pump during the installation process. The R&R man was certain that he had done his job correctly and that the rebuilder must have done something wrong during the rebuild. To help pinpoint the problem, a pressure gauge was installed into the line-pressure port. To everyone’s surprise, the line pressure was normal. This meant that not only was the pump not broken but also the PR valve was not stuck open. This also meant that the transmission would have to be removed from the vehicle and at least partially disassembled.
We had such a case just recently. We field many calls regarding the Hyundai and Mitsubishi F4A40/50 series transmission. Usual complaints on this unit are that it’s in failsafe or there’s a 2-3 shift flare. But on one particular day, we received three tech calls in a row with an out-of-the-ordinary problem. Two were regarding a 2001 Dodge Stratus with a 3.0-liter V-6 engine, the other a 2002 Chrysler Sebring with the same 3.0-liter V-6 engine.