December 2010 Archives - Transmission Digest
Plug that Bore: U150/250 shift complaints

Valve-body bore wear has become so common that one can just about predict which bores will wear when a new transmission hits the streets. Any valve that is regulating is up for grabs. TCC, pressure control, clutch regulating valve, whatever you want to call it, if it moves back and forth quickly and consistently, more than likely it’s going to wear the bore.

Pooling our Resources

The Torque Converter Rebuilders Association (TCRA) recently formed a technical committee to address the technical needs of torque-converter rebuilders and funnel technical information to its members. This information will be presented on the TCRA Web site and in the TCRA newsletter, among other publications.

Solenoid Mix-ups

The SLT and SL1, 2 and 3 solenoids used in the U150/250 transmission (Figure 1) can easily be positioned incorrectly, causing a variety of malfunctions such as wrong-gear starts, no shifts and bind-ups, to name a few.

Getting (and Staying) Connected

Being the technical director for the valve-body and solenoid department, I’ve seen more than my share of errors and mistakes that people have made while working with automatic transmissions. The majority involve electrical components, most of them involving the connectors in some way. Often damage to a connector is done during the disconnection process. We’ve all been told not to wiggle a connector to get it off because it can expand the pin cavities in the connector and cause the pins to have poor or no connection when the connector is plugged back in; for example, in Chrysler 604s.

Lexus’ RX Series: What’s Its Future?

The Lexus brand has been around for two decades now. Toyota saw that Honda had a good thing going with Acura so Toyota jumped into the luxury market and moved into first place with European-type designs, good product and new ideas. This crossover segment, as it was first called, was a smaller SUV that used a car platform (uni-body) and a four-wheel-drive (4WD) system with higher ground clearance than a conventional car.

Year-End Roundup

We have reached the end of another year, and a wild year it was. Business in some areas has shown modest improvement, but on the whole I believe most shops are far from happy with the results.

Inspired by Future Techs!

In Queens, a borough of New York City, there is a $28-million state-of-the-art facility known as the Center for Automotive Education and Training that was erected to train present and future technicians, service advisers and basically all other personnel who man an automotive dealership. It is owned by the Greater New York Automobile Dealers Association (GNYADA), a group of more than 600 member dealers who, among other things, produce the New York Auto Show each year, arguably the largest new-car auto show in the country and perhaps the world, where the public gets its first look at the new models and the dream cars the designers have come up with and show off as prototypes.

December 2010 Issue

In This Issue
Chrysler/Dodge 41TES/42RLE-VLP: Variable-line-pressure solenoid and sensor