Ride Control Upgrades: Struts, Springs and Sway Bars
Some magazines write about suspension modifications on some of the most mundane vehicles, BRAKE & FRONT END never takes the easy way out. When most people think about lowering springs and other modifications, they think of Asian imports shaking the fillings out of a young driver. You almost never think of a BMW 7 Series.
Tire Pressure Monitoring Systems: The Ins and Outs of Indirect and Direct TPMS
This is the year of the TPMS (Tire Pressure Monitor System). It’s been coming for some time. In response to a rash of highly publicized rollover accidents caused by tire failures on SUVs, Congress passed a law called the TREAD Act in 2000 which required all vehicle manufacturers to have TPMS on all their cars
Tech Feature: Gaining Access to Perimeter Anti-Theft Systems
It could use the same acronym, but is perimeter anti-theft the same as PATS? No, PATS, which stands for passive anti-theft systems, is a system that is designed to identify the key, and was discussed in the July 2007 issue of Underhood Service. Perimeter anti-theft is a system designed to identify unauthorized vehicle entry. There
Subaru: The ‘Complete Service’ Value Proposition
Begins With Determining How Customers Use Their Vehicles
Diagnostic Solutions: Charging System Diagnostics & Troubleshooting
Although checking charging voltage at the battery terminals is the most popular method for testing an alternator, a charging voltage test seldom reveals less common problems like open or shorted alternator diodes, intermittent high or low charging rates, charging system wiring problems, intermittent cranking/no start complaints or intermittent dead battery complaints. In addition, testing charging
Alternators & Starters: How and Why These Hard-Working Components Fail
One reason why alternators have a high failure rate is because they’re always working under a load. Generating electricity to recharge the battery, run the fuel pump, injectors and ignition system, and power all of the vehicle’s lights and other electrical accessories places a substantial load on the alternator that generates a lot of internal
Exterminating Electrical Parasites
Any electrical circuit that is wired “hot at all times” has the potential to become a parasite to the battery. There are some wanted parasites on the vehicle that are necessary to have, and some that are not. We’re going to find out how to “fingerprint” and track down the unwanted ones systematically. A parasitic
Power Your Profits with Performance Mods
The sport compact car market is certainly a good place to be these days. One of the advantages of doing import performance modifications and upgrades is that you don’t have to wait for cars to break to get business. The people who drive these cars spend money on performance modifications regardless of the age, mileage
Dispelling TPMS Myths
In the October issue, we addressed lessons learned from Toyota dealerships and how they have come to handle TPMS issues. This month, a Ford Motor Co. engineer provides helpful information on myths that surround TPMS units and service. Myths are fine if you’re teaching mythology. However, they are a pain in the bay for the
Starting/Charging System Diagnosis: Fixing Faults the First Time Eliminates Comebacks & Returns
How many starters and alternators are replaced unnecessarily every year because of misdiagnosis? Nobody knows for sure, but suppliers of both new and remanufactured rotating electrical parts tell us more than half of their warranty returns have “no fault found” when the parts are examined. Many of these returns are from DIYers who lack diagnostic
Alignment Update: Consider Long-Term Value of Equipment
Alignments are an equipment-intensive business. Purchasing this equipment is often done with the state-of-mind of “who is the least expensive.” But, “least expensive” is a relative term that can be narrow or broad in definition and scope. Least expensive can be looked from two different perspectives. Short-term is looking at just the one-time purchase price.
Solutions to Repair a Wiring Repair Nightmare
KNOWN PROBLEM AND SOLUTION A 2002 Chevy Impala has the ABS malfunction light on and wheel speed sensor code, C0040 – Right Front Wheel Speed Circuit Malfunction, is in the scan tool. There is no apparent damage to the harness or connectors. TSB #03-05-25-008 states that the connector for the sensor and its harness wiring