Diagnostic Solutions: Noise, Vibration & Harshness Diagnosis
Since the earliest days of the automotive service business, “squeak and rattle” diagnostics has become a euphemism for low-profit, nuisance repair work. Unfortunately for those of us in the auto repair business, even our best customers have the occasional need for noise, vibration and harshness (NVH) diagnostics. On the plus side, if NVH diagnostics are
Correcting Coolant Confusion
Have you ever seen the inside of an aluminum water pump that was not adequately protected by the corrosion inhibitors in the coolant? Or a radiator or heater core that failed from the inside out because of internal corrosion? These kinds of parts failures are all too common. Yet they can be easily prevented by
Selling Services: Our 15 Minutes: Can A Truck Stop A Plane?
Engineering and servicing brake systems has likely never been considered a “glory job.” However, it is certainly a necessary, challenging and rewarding occupation. Our contribution to driver safety and confidence can be rivaled by few others outside the medical domain. When I first started in the brake industry, I quickly came to a point where
Brake Tech: What is a Complete Brake Job?
Most motorists know brake linings don’t last forever. Brake pads and shoes use friction to stop a vehicle, so every time the brakes are applied the linings experience wear. After so many stops, the linings wear out. The rate at which the linings wear out depends on the frequency of use, how hard the brakes
Diagnostic Solutions: Disc Brake Caliper, Inspection and Installation Procedures
The repair or replacement of disc brake calipers has always been a controversial topic for most import shop owners and brake technicians. Some recommend replacing the brake calipers along with the brake pads, while others won’t replace the calipers unless they’re found to be defective. For many, routine caliper replacement is a cost issue and
Tech Tip: GM Duramax Diesel Fuel Filter Replacement Problems
The following tip applies to all 2001-’06 General Motors trucks equipped with the 6.6L Duramax Diesel engine, RPO LB7 or LLY. There are a couple of issues with the fuel filters on these vehicles. GM has released a revised fuel filter; see TSB 04-06-04-070. The new filter is longer than the original filters used and has a plastic housing.
Acura Tech Tip: Diagnosing Front Suspension Knock
A knocking noise from the front of any vehicle can be a cause for concern. If the vehicle is an old pickup truck with 150,000 miles of hard off-road use, noises usually come with the territory and are sometimes acceptable. But, if the vehicle is a 1996-98 Acura RL, not only will the owner notice it, they will probably want it fixed right away.
Brake Pad Wear
Brake pads are one of the few remaining accepted wear items in a modern vehicle. As a result, it represents a significant revenue opportunity for the service community. Drivers would surely love to have brake pads last for life. Service shop owners may have a different opinion. I’m sure that shop owners must deal daily
Brake Tools: Brake Service Tools & Equipment
Brake work is one of the cornerstones of the automotive repair business, so it’s important to make sure you have the right tools and equipment to service the brakes on today’s vehicles. Most shops that do brake work have some type of brake fluid flushing and bleeding equipment (a power bleeder, vacuum bleeder or injector
Chevy Silverado Tech Tip: ABS Light Comes on at 40-50 mph
At speeds over 40-50 mph, the ABS and brake indicators come on, and the fuel and volt gauges sometimes drop low at the same time. The technician had already verified the condition and checked for codes before calling Identifix. He found code C0237 (rear wheel speed signal erratic) stored as a history code, but it had not reappeared for him.
Nondirectional Rotor Finishes: Do You Need Them?
You have probably heard that nondirectional rotor finishes can lessen the risk of new brake pads squealing. They can, but do you really need to apply a nondirectional finish to freshly turned rotors. And what about new rotors? Should you give them a nondirectional finish if they don’t have one? Like many issues concerning brake
Tech Update: Warped Rotor Syndrome
Putting The ‘Brakes’ on A Common Customer Complaint Warped rotors are probably one of the most common complaints made to shop owners and technicians who repair and service brake systems. The less confident or sophisticated driver may complain that when he hits the brakes, “my pedal pulses,” “the vehicle chucks during a stop” or “it