Replacing FWD Wheel Bearings
When a wheel bearing goes out on a FWD car or minivan, it may or may not give much warning. Typical clues include noise from the vicinity of the wheel, possibly some steering wander or looseness in the steering, and/or some abnormal tread wear on the front tires. Also, an ABS light could illuminate. Any
Diagnostic Dilemmas: Navigating OBD II Scan Tool Diagnostics
Although some hybrid OBD I/OBD II versions existed as early as 1994, the current version of OBD II was introduced in 1996. Because OBD II is a scan tool-based diagnostic system, diagnostic techs have become much more reliant upon the scan tool as a primary method of diagnosing malfunction indicator light (MIL) issues. In addition
OBD II Diagnostics: Checking into Mode $06
In this scan tool diagnostics article, we take a look at Mode $06 functions which govern non-continuous monitors (EVAP, catalyst, EGR, etc.)
Aftermarket Update: April
MEMA Releases Educational Counterfeiting Supplement Distributors, retailers and automotive technicians looking for more information about automotive parts counterfeiting need to look no further. The Motor & Equipment Manufacturers Association (MEMA) recently released an informational supplement focusing on the issue counterfeiting in the auto parts industry. MEMA’s Counterfeiting publication was designed to serve as a resource
Expand Exhaust Business with a Pipe Bender
Every automotive service facility is looking for ways to squeeze additional profits out of the jobs they are performing on a daily basis. For those shops offering exhaust service, or thinking about expanding their services to offer performance exhaust services, a pipe or tube bender will help reduce the amount of money spent on pre-bent
Mastering Mercedes Multiplexing
“CAN” is the new buzz word in automobile diagnostics. It stands for Controller Area Network and is a protocol for onboard diagnostics and scan tools. CAN is a high-speed data link that provides more information at a faster rate for better communication between onboard electronics and external diagnostic equipment. Many manufacturers have already started incorporating
Why Go Digital? For Precision and Protection
These days, no matter what kind of automotive repair work you specialize in, virtually every system has a certain amount of electronics. Consequently, one diagnostic tool every technician needs is a digital multimeter. To figure out electrical and electronic problems, you have to “see” what’s going on inside the circuits and components. Trouble is, you
Checking into Mode $06
Mode 06 is the actual system test data that OBD II looks at when it decides to set a pending code or a current fault code. If the test data is within the limits established by the vehicle manufacturer, the item gets a PASS and no codes are set. But if a value is out of range, OBD II flags it with a FAIL and keeps an eye on the component until the system monitor has run at least twice. Then, if the problem is still there, a DTC is set and the MIL light comes on.
Saab 5-Speed Tranny and Clutch Repair
When Saab first introduced the 9000-model lineup in 1986, the gearbox was mounted transversely in the car. It was designed in this way for effective cooling and to provide the shortest possible path for the power flow to the wheels. All Saab transmissions have five forward speeds and reverse – all of which are synchronized.
Searching for the Diagnostic Path
Most recently, I’ve found myself dealing with an increasing number of random, multiple-code complaints that involve computer operating strategies and networking communications issues in which the multiple trouble codes or DTCs tend to be symptomatic, rather than indicative, of a component failure. A basic illustration of what I’m talking about is a simple DTC 44,