Perspectives: If it’s Not Broke, Fix it Anyway
What’s your definition of preventive maintenance? Does it differ from your definition of scheduled maintenance? The term “preventive maintenance” is often used interchangeably with “scheduled maintenance,” but there’s a difference. Preventive maintenance means recommending the service or replacement of certain parts because they are wearing out and nearing the end of their useful life. Repair
BMW Tech Tip: Solving Steering Wheel ‘Twitch’
You may get a customer complaining of a very slight "twitch" that can be felt in the steering while holding the steering wheel lightly with one hand and giving the brakes a quick tap. The steering wheel will twitch slightly only once, with no disruption in the stability of the car, and no pull to either side. Before you dismiss the owners as "nit-picky whiners," you should know their complaints may have merit and BMW has offered a solution.
Tech Tip: Improving Vehicle Handling
Shock absorbers and struts dampen the motions of the suspension to provide a smooth, comfortable and safe ride. Some OEM shocks have electronic valving that allows the driver or a body control module to adjust the dampening characteristics of the shocks or struts to changing driving conditions.
Tech Tip: Underneath is Often Overlooked – Check the Vehicle’s Chassis
Preventive maintenance typically implies looking under the vehicle’s hood; often, though, it’s the chassis underneath the vehicle that’s overlooked. According to the Automotive Aftermarket Suppliers Association (AASA), underperformed vehicle maintenance in the American automotive aftermarket industry is more than $50 billion annually.
Tech Tip: Chevy Blazer’s Engine May Rattle Between 1,800 and 2,200 rpm
Some customers may comment on a rattle-type noise coming from the engine at approximately 1,800 to 2,200 rpm. The spark, rattle-type noise may be caused by torsional vibration of the balance shaft. If detonation noise is present, perform detonation/spark knock diagnostics first.
Tech Tip: Diagnosing a Worn Wheel Hub Bearing
Signs of a worn wheel hub bearing vary in severity. Some may be difficult to detect, leading to damage before corrective action can be taken. The time frame in which damage occurs is linked to driving conditions and/or the mechanical practices that were followed at installation. Noise is a classic sign of a bad wheel bearing or wheel hub bearing.
Escalade Tech Tip: Fixing Front End Squeaks
Your shop just installed a new set of tires on a 2002 Cadillac Escalade. The very next day, the customer returns complaining about a squeak and a rattle coming from the front end that wasn’t there before you replaced the tires. What happened?
OTC Releases TPMS Advisory
The gateway to safe and reliable tires fundamentally begins with TPMS education. Many studies show that the majority of cars on U.S. roads are operating on tires inflated to only 80 percent of capacity. OTC urges technicians to advise their customers to check their tire pressure monthly, if not more frequently.
Hyundai: From Ball Joints to Brakes…
Uncovering Needed Repairs With Undercar Inspections The brake and suspension systems on Hyundai’s popular line of cars and SUVs are both undercar systems where problems can be detected during routine maintenance. From loose ball joints to worn-out brakes, it’s all there to be checked while the vehicle is on the rack for service and, oftentimes,
Diagnostic Dilemmas
It’s Mechanical, Stupid! Just about every student of politics remembers President Bill Clinton’s famous campaign slogan, “It’s the economy, stupid!” Allow me to paraphrase by saying, “It’s mechanical, stupid!” Yes, that’s right, mechanical failures can cause diagnostic trouble codes and, all too often, we tread the Primrose Path because we become lost in a maze