March 2006 Archives - Transmission Digest

We all know how important grounds are in an electrical system, and when it comes to our trade we can tell incident after incident of weird, unexplainable transmission malfunctions that are taking on “fish story” proportions. And, in fact, we have caught quite a few large ones over the years.

Hello! Complaint Department

We all know the difference between a recession and a depression. A recession is when your neighbor loses his job; a depression is when you lose yours. But a recession makes people crawl into a foxhole to wait for the war to pass by. The cycle generally lasts for a year or more. It usually takes about that long for Joe Average to figure out he isn’t going to lose his job. During the time he’s in fear and not buying anything, a strange phenomenon is taking place. He’s actually paying down his credit card and other debt. As soon as he again feels confident that his job is OK, he opens the floodgates and begins to spend, and pretty heavily at that. After all, he has to catch up on all those things he wanted to buy.

Small Tips for Big Rebuilding Headaches Part 2

Many of you who call us for technical support and advice ask for items that fit this description. While we are always open to new ideas for new products that solve root-cause problems, there are times when these parts are already readily available and reasonably priced. It’s just that few rebuilders know about them. So, here are a few brief tips for you on some of the parts you asked for and where you can find them.

Fluid Change Can Cost Big Change ($)

Some of us may remember how in the days of old a C-6 transmission would leave a beautiful filter footprint in the bottom pan. This resulted from the filter opening being too close to the pan. When the pump started sucking, it would pull the pan right up to the filter, and as it vibrated away the filter etched itself into the pan. Of course, that starved the pump and caused premature failure of the transmission.

Indexing TCC-Piston/Damper Assemblies to Turbines

At a recent TASC™ Force meeting, one of the members expressed concern about an increase in the number of worn-out bores in TCC pistons that he was seeing. Although the problem is prevalent in many different pistons, his main focus was on the GM 298mm pistons.

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.

The Rear Up Front

With four-wheel-drive and all-wheel-drive vehicles being produced in such huge numbers, these trucks and cars have become an important source of repair business for our industry. Transmissions and transfer cases are now a huge part of the repair and reman market. It is also obvious that these designs use both front and rear differentials to transfer power to both sets of drive axles. This has effectively doubled the amount of differential work that will find its way to the repair shop.