September 2009 Archives - Transmission Digest
Don’t Blow Your Fuse

The vehicle involved was a 1998 Honda Passport 4WD with a 3.2-liter V-6 and 4L30-E transmission. The shift indicator in the cluster was not functioning properly, and the transmission was shifting hard. The indicator showed P in Park and 1 in D3, D2 and D1, and it didn’t light up any other time. This seemed to be pretty straightforward, since the mode switch (range sensor) has a high failure rate.

September 2009 Issue

Issue Summary:

A Ford truck equipped with a 5R110W transmission exhibits erratic shifts, intermittent operation of the transmission-fluid-temperature gauge and no Tow/Haul mode function.

A Ford Motor Co. vehicle with the 5R110W
TorqShift transmission has only 5th gear and reverse and displays DTC P0657 either before or after overhaul.

The speed-control deactivation switch in 1994-2002 Ford trucks and SUVs can cause an underhood fire by dripping brake fluid onto a nearby electrical connector that carries system voltage at all times.

How to Be a Clutch Hitter

The clutch-driven vehicle will be here for the foreseeable future. The good news is that driver skills have declined, which makes clutch replacement a bigger share of your business.

Broccoli: Corroded wiring causes TPS-voltage code

We had a 1999 Dodge 24-valve diesel truck that came into our shop with no fourth and no lockup. The truck had been at another shop, which had already replaced the accelerator-pedal-position sensor (APPS) and the powertrain control module (PCM) in an attempt to fix this complaint.

Toot Your Own Horn!

As Denny Gipe from Dennis Gipe Transmissions in Chambersburg, Pa., mentioned in this month’s Shift Pointers article, ATSG has experienced the P0123 code in late-model Jeeps using the 2.5- or 4.0-liter engines and the AW4 transmission. P0123 indicates TPS voltage high, and in these vehicles it produces a complaint of no upshift. One cause for this condition is the horn’s 12-volt clock spring inside the steering wheel short-circuiting with the cruise-control’s switch-sense wire (Figure 1).

Easy Fix for 4T60-E Accumulator-Housing Pin Wear

Accumulator-piston wear is common and fixes are readily available, but the little pocket where the piston pin sits in the accumulator housing also wears, and this is a more-difficult problem to solve. This article describes a way to salvage accumulator housings using parts and tools you have lying around in your shop.

Serviceability Report: Honda Insight Hybrid

Honda introduced the first hybrid to America in December 1999, a month that changed a lot of what we thought we knew about cars. That was the past century. Since then Honda has produced a hybrid that flopped, the Accord HEV (2005-2007), and a Civic hybrid electric vehicle (HEV) that sells well. The first generation of the Insight was discontinued in 2006 and the Civic HEV was on its own, holding the hybrid flag for almost two years until now. In April of this year, another Insight was offered as a 2010 model.

Orifice Control within the Converter, Part 2

Most torque-converter rebuilders understand how oil flow within the converter harnesses engine torque and helps drive the vehicle. Unfortunately, many rebuilders have little knowledge of the many secondary paths and functions of converter oil flow.

Can You Be too Nice?

Customer service means taking care of the customer all the way through the selling process, then verifying that it all went well and that they received the value they expected for their money. Afterward it means being available and willing to jump right in and help if a problem should develop.