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Engine Maintenance: OBD II Diagnostics, Misfire Codes, Fuel Trim Faults, Driveability and More

February 23, 2010

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Tech Tip: Hyundai Check Engine Light Diagnostics

There are a couple of ways a Hyundai will find its way into your bay with a check engine light complaint. If a misfire is obvious, you may be tempted to get to work and start switching coils, checking wires or whatever, looking to diagnose the problem. But before you do, check the codes to see if more... More

Porsche Engine Diagnostics: Misfire Codes, Fuel Trim Faults, Secondary Air Injection

Porsche has been building engines for decades that will literally fit in a suitcase, but are still able to put out horsepower that rivals many larger engines. Find out how to keep the Porsche Boxster engine running smoothly. More

Tech Feature: Mazda Driveability Diagnostics and Check Engine Light Complaints

From a torn air intake hose to ignition system concerns, Bob Dowie tackles driveability issues as well as some of the more common ailments that will bring Mazda vehicles into your bays with a check engine lamp complaint. More

BMW Climate Control Diagnostics: Resolving Any Cooling System Problems First Speeds Repairs

First Speeds Repairs There was a time when the heating and ventilation system on most cars was simple. A three-position switch, a couple of levers and maybe some separate vents that would allow outside air to enter the pass More

Tech Feature: Fueling the Future - Can You Fill Up with Alternative Fuels?

Currently gas prices have stabilized at around $1.83 a gallon, a price at which most Americans feel comfortable driving their SUVs, trucks, race cars, tow vehicles and other motorized toys. But when gas hits $4 and $5 a gallon, driving guzzlers becomes a challenge for many. It was only a few months ago... More

Tech Tip: OBD II Engine Diagnostics

Anybody can plug a scan tool into a vehicle and read codes. But do they know what the codes mean, how to diagnose the fault or, most importantly, how to fix the vehicle? The problem with reading OBD II codes is that the code tells you only that a fault has occurred. It does not tell you why the fault... More

Tech Tip: Belt and Hose Inspections

Although belts and hoses are still classified as expendable parts, their durability has increased to the point that many import shop owners and technicians are now neglecting to perform routine belt and hose inspections. From a historical perspective, belts and hoses have moved from a recommended replacement... More

OBD II Engine Diagnostics: Not as Simple as it Seems