Underhood Automotive
Acura High-Pressure Fuel Pump 

Follow the correct repair procedures for a high-pressure fuel pump that is making a chirp.

Modern Vehicles Need Precious Metals 

Modern ignition systems require dual precious metal spark plugs capable of supplying the highest voltage outputs to date.

Solving No Heat Complaints

Here are 10 guidelines for making sure a vehicle’s heat functions.

Why Engine Coolant Replacement May Be Necessary, Not Optional

Look at the condition of the additive package and the freezing point to justify coolant replacement.

How Battery Service Continues To Change

Your attention to a battery’s condition will tell you if it needs to be replaced – and with what.

Are You Choosing The Right Transmission Fluid?

Just because it’s red doesn’t mean it’s all the same.

Technician wipes off transmission fluid
Ethanol & Fuel Systems

Here’s what you need to know about ethanol and E15 fuels.

Cartridge Oil Filters

Mistakes made can result in costly comebacks.

Turbocharger Topics

Turbochargers have made a comeback – and it’s been quick.

Superchargers: Pros And Cons

Drivers generally look to superchargers for the instant throttle response, not fuel economy.

FORD Active Exhaust System Concerns

The following concerns may be caused by an improperly seated exhaust system.

Oxygen Sensors And Catalyst Efficiency

Newer air/fuel ratio or wide-band sensors can detect a wide range of fuel conditions.