technician training Archives - UnderhoodService
Acura Turbo Engine Service

It is important to check the operation of the solenoids that control vacuum to the actuators.

Subaru EJ25 Head Gasket Problems

Most of the EJ head gasket failures occur around the 100,000-mile mark and start as a slow oil or coolant leak.

Repairing Wiring Harnesses

A guide to probing and poking.

Ignition Systems

The ignition coil is a very simple and robust circuit.

Auxiliary Cooling Pumps

An auxiliary cooling pumps primary function is to circulate warm coolant to the heater core.

HV/EV Battery Pack Replacements

It is difficult to say when a battery pack will need to be replaced.

Diagnosing Crankshaft Position Sensors

Modern engines need to not only know the position of the crankshaft, but the position of the camshafts.

Electronic Throttle Body Service

On most systems, idle speed is completely controlled by the throttle plate angle.

Cabin Air Filters

Don’t overlook the importance of the cabin air filter in your customers’ vehicles.

Being More Motivated

Set and reach your goals together.