Phaser-Style Variable Valve Timing System Controls And Operation
Phasers commonly can be found on just the exhaust cam or on both the intake and exhaust cams.
Top Tech: The Sky’s NOT the Limit
When it comes to finding new customers for the shop, Kim Brant looks outside the box.
Tech Tip: Subaru Impreza With DTCs P0705, P0851, P2746, P2750 And/Or No Crank, No Start
If you receive a customer concern of a Check Engine light, AT Temp light or a no engine crank condition, the wiring harnesses to the transmission range sensor (inhibitor switch) should be closely inspected for damage or a short circuit to the CVT transmission case.
Diagnostic Solutions: No-Code Sensor Failures
Import Specialist Contributor Gary Goms takes a look at how to utilize one or more scan tool features to detect an intermittent, no-code sensor failure.
How ‘Sweet’ It Is: Uncovering Unperformed Maintenance
Bob Howlett, owner of The Swedish Solution, Orange Village, OH, shares a vehicle inspection victory that resulted in his customer opting to get her 2004 Volvo XC70 fixed, rather than buy a new vehicle for her daughter.
Tech Tip: Kia Check Engine Light Is On With MAF Sensor Code
Kia Rio’s check engine light is on and there is a mass air flow (MAF) sensor range/performance code in the system. The engine will hesitate at times.
Advances In Electrical System Testing
Contributing writer Mike DuBois returned from the AAPEX and SEMA shows with a host of new information on multimeter and scan tool innovations.
Tech Tip: Hyundai Resetting PCM/TCM Adaptive Values
The PCM or TCM contains logic to adjust solenoid duty and line pressure as needed to compensate for normal clutch wear over the life of the transaxle. This bulletin provides the procedures necessary to reset (erase) and “relearn” the PCM/TCM adaptive values.
Maximizing Current Ramping Techniques In The Shop
Although modern on-board diagnostic systems are becoming far more comprehensive than in years past, it’s still important to know how to use a lab scope and inductive current probe to analyze the amperage flow through the primary ignition and fuel pump circuits.
Tech Tip: Water Intrusion From A/C Drain May Cause DTCs On Ford SUVs
A DTC may appear on some 2006-’10 Ford Explorer, Mercury Mountaineer and 2007-’10 Explorer Sport Trac vehicles due to water traveling down from the A/C drain into the solenoid body connector on the left side of the transmission.
Tech Feature: Venturing Into GM Duramax Diesel Service
Back in the 1990s, GM wasn’t making too many waves in the diesel truck market. The 6.2L and 6.5L engines had been around for sometime, but they were no match for the release of the Cummins 6BT in the Dodge truck in 1989 and the Ford Powerstroke in 1994.
Pulling Codes: What Is Our Position On This? The Story of P1512
P1512 is a code that involves electronic throttle control (ETC), or throttle actuator control (TAC), and in many situations, a technician may be tempted to replace the throttle body assembly right away. This article will attempt to provide a better plan of attack.